There is no need to discuss in depth because everyone here already knows how to invest in bitcoin, they have understood how to hold and the market situation, if it continues to be discussed it will be the same discussion.

Everyone has a choice about investing, some even avoid it altogether for fear of the risk of losing any way they fear.

I never suggest investing to anyone, if they are interested in bitcoin then at least they already understand what they want to invest, out there there are different points of view even hate this investment therefore I better avoid conflict.

But here, I will disagree with your statement because the phrase as much money as you can afford to lose is used when investing in Bitcoin not only because it is a gambling but also because Bitcoin has many other risk factors such as it is a highly volatile asset and at the same time since Bitcoin is a virtual currency, there are other risks, such as wallet being compromised or the platform where you are holding Bitcoin getting crashed although bitcoin shouldn't be hold on centralized platform.

You have already said in your own post that a person should hold or invest that amount which he doesn't have to use later in case of emergency situation. Here, the first part and the second part of your post contradict each other. 

Yes Bitcoin is definitely worth buying. Its limited supply, growing global adoption and independence from government money printing make it an attractive long term asset. Obviously there will be volatility and no guarantees but if you’re thinking 5–10 years ahead rather than chasing quick profits, I think BTC has a very strong investment case.

When you put money in a bank you can lose your money because the bank can go bankrupt and such things happen. When you invest in gold it can be stolen. When you invest in a house property it can be destroyed in an earthquake. There is no investment in the world that is risk-free. However, you have to use your intelligence to deal with the risk. Why would you keep your Bitcoin on a centralized exchange? You know that your Bitcoin is not safe there. Why don't you keep your personal wallet private key carefully where the key is the only life of your Bitcoin? All investments have to be taken care of and managed smartly, then it will not be difficult to protect them.

When you invest in a business, you have to invest in various types of raw materials, various machineries with this money. Can you withdraw money from there at any time if you want? Then why should you use the money you invest in Bitcoin for your emergency purpose? You should only invest in Bitcoin that amount of money that you will not need for a long time. You should always keep a separate fund for emergencies. And if you are in such a danger where your life is at risk, then if you absolutely need to sell your Bitcoins, you should definitely sell them. If you sell your Bitcoins for a small need, then it will not be a long-term investment. This is how I explain the matter.

Whether Bitcoin investment is advisable depends on what kind of investment the person is looking for.  If the person is looking for a short term investment, the answer would be dependent on the situation of the Bitcoin market, if the timing is right and the market is just entering the bullish phase, then yes but if it has passed its ATH and entering the bearish phase then the answer is no.

But when the investment is for the long term, then it is always advisable to invest in Bitcoin.

There is nothing to fear about Bitcoin anymore because Bitcoin is no longer new and people are not new to Bitcoin. If Bitcoin becomes so popular with people and if Bitcoin can make people rich slowly and in the long run, then there is nothing to fear. If we can provide maximum security to our wallets and if we can invest correctly, then we can definitely be very profitable. But I would say that there should be no fear about Bitcoin investment now because now Bitcoin is entering almost all people, starting from the general public.

People who are well aware of the potential of Bitcoin always recommend and put their investment in this because it's never going to have a problem for them. Bitcoin is currently one of the best options for people who are looking for a long-term investment and want to keep things in balance, meaning fight against inflation and also secure a good strategy.

Firstly, it needs to have good knowledge because if someone is not going to increase his mind about this, it's never going to have enough security and awareness. Always keep things on a level where they are easily manageable. Never try any tactics that give any regret because recently few things are not having positivity about bitcoin, but still it's all going to end with a better way of understanding.

Bitcoin investment is only advisable to those who are high risk-takers that are not afraid of losing their funds or investments in the long run. Bitcoin is already risky from the beginning, so one should know how to manage the risk and minimize the risk of losing.

Bitcoin is not advisable to those who have high-risk aversion as they are not capable to face high risk and danger, higher form of stress and pressures due to the constant market changes and bitcoin's high volatility.

What kind of response are you expecting from a Bitcoin community? You should expect that almost everyone would respond that Bitcoin is a good investment. Investing in Bitcoin isn't forced; it's a choice. Those who cannot manage the risk of buying, hodling, securing, and maybe selling after some years should abstain from it. Bitcoin is not a good asset for careless and impatient people. From my personal experience, I will always recommend that people buy Bitcoin because it is one of the best assets. Its high returns and decentralized nature are second to none.

The world today is full of fear, uncertainty and doubt. And if they're afraid to put their money to bitcoin for its volatility and heard the news about hacking, don't stop them and let them see what they want to see. Because the reality shouldn't be hidden to them and they have to see it in actual. We are not pushing them to invest and if someone asks for an advise, likely hearing about invest of what they can only afford to lose. Not their life savings, not a big amount but with the money that they won't mind putting into risk. And the next actions depends on them if they get used to its volatility, the fear and all of the bad news that they hear until they realize that it happens everywhere.