True, a wall of text like that would be boring for them, they would pay you any amount just to stop talking about bitcoin  

I think the best way to get the parents involved with cryptos is to be honest, and explain the monetary side of it, how it used to cost $400 in 2014 and right now it cost $63,000 if they don't see the benefit that way, then it will be hard to convince them.

Another way is to make them proceed on a blind investment. "Hey mom, do you believe in me? then give me $5k for an Investment", hold the coins for 5 years and you will be in a huge profit.

I believe, even someone who own a lot Bitcoin and know the reason why they invest in this currency, didn't even know what you said above.

People don't have to understand the technical thing to invest in Bitcoin, they only need to understand basics computer security, compare Bitcoin with banks, fiat and other assets, that's. So, when they understand what actually Bitcoin is different and offer use cases that you can't find from other assets, it's enough.

Frankly I don't want to convince my parents to buy Bitcoin, they know what I'm doing, so if they're interested, they should open a discussion about it with me.

We are not all the same in terms of perception, so actually presenting someone with an opportunity with bitcoin is really a double-edged sword, and it is not certain that it will completely guarantee the opportunity without risk. For me, it is not necessary to teach my parents about bitcoin, because most people in my family do not pay too much attention to technology or finance, so spreading knowledge does not happen overnight, and it's like trying to explain to a child about DNA replication.

So imo, let everything happen naturally, without necessarily convincing someone about the opportunity that we know about. Through that, prove that you have a good opportunity by showing the results you get and helping those around you in return.

The first thing that is needed to encourage not only parents but also someone you know about something is an example of walking in it yourself and succeeding in it. Because parents is quite old and convincing them to invest in a decentralized blockchain like cryptocurrency is relatively difficult. Especially my parents totally discourage them from taking any risks at this old age. Their patience is fairly thin and I may be able to deliver this long speech to them but those who listen to such a long speech will be fairly bored.

my father bought bitcoin many years ago (of course I follow the whole process)
Honestly, I didn't insist on making this purchase but he decided independently.

It's my idea, but I believe that the best motivation to get someone to buy bitcoin is to make them understand the advantages of this technology. it is useless to talk about "earnings".
He could hit the wrong moment and have a sensational dump, or he could have a magical moment and suddenly make money.

This is one of the best method to pass wealth down the generations.
In a certain sense we are the first generation to use bitcoin.

I imagine that in many decades, it will be really difficult to acquire bitcoin directly except through financial instruments.
but it is not the same as having bitcoin directly

omg I did not expect that many answers 

I have added a TL:DR edit, additionally, I do not expect for you guys to read the whole text, that is a baseline for my pitch, I would rather like to know if you guys have had any success on similar cases, and what is the reaction.

For instance, I have had some kind of success when gifting bitcoin, some poeple got interested, and some didn't, but it is another strategy.

Also, I do not want them to invest for my own benefit, I already handle everything on my own, I just want my loved ones to be aware of the whole picture, different from the one shown in the mainstream media

Older people are more focused on physical investment instead of digital investment so the parents will not easily give you money to put it into Bitcoin and also will not allow you to use your own money for such a purpose. Actually they believe that the things which we cannot see are not worthy and they cannot reach the Bitcoin source so they think that is not a good way of investment.

It is important to be noted to ask your parents about anything that you are investing in and if your parents do not allow you then don't do that because their knowledge is more than ours. If you still want to make Bitcoin investment then first convince your parents and then start investing.

LOL... This was not how Op convinced his parents to buy bitcoin. He is just teaching us now to convince our own parents his way. If I am a parent and you bring this to my table, I'll definitely bounce it. This is the reason why older people always complain that bitcoin is too tedious and technical to understand. It all depends on the premise it was introduced to them.

Meanwhile, I know of a friend who doesn't find it difficult to convince his parents (especially the dad to invest. She did it to his dad more than twice and it ended that the project was a scam and her dad lost money. Yet, her dad still believe for other financial advces.

Me?
So sorry, but I think that I will never make it. Because I really understand my parents' condition so far. So it is very unlikely that they will invest in Bitcoin. yeah, no problem. Let them enjoy their old age more comfortably and calmly without thinking about Bitcoin assets with all their fluctuations. What they do is just to breathe in the fresh air of the village and carry out daily activities that they like. Yes, that's their wish and I really appreciate it.

However, I don't want to generalize all old rooms like that, because their conditions are definitely different. If you want to convince your parents to invest in Bitcoin, make sure you understand the conditions and financial readiness of your parents. Both your mom and dad will usually tend to follow their child's wishes, even though they are sometimes quite at odds with what they really want. For this reason, we also encourage them to get to know Bitcoin in order to invest in it. unless they are very close to technology and are no strangers to Bitcoin. Then they also understand what Bitcoin is like, its fluctuations and various things related to risks. Parents will usually be very careful about the risks they take, so make sure you have a very strong reason, which is not in the form of promises that are too high or too sweet.