As in 2009 appeared this grandiose market of crypto currency, how the movement of innovation was born, then bitcoin entered the world of crypto currency and it developed more often and faster. Therefore, of course bitcoin will be in the lead.

Yes bitcoin has very high prospect for future development.
So bitcoin is very famous because of that reason.
But in other thing that you said bitcoin is stable growth but its not really stable. And its not stable but volatile.

Bitcoin was the pioneer coin that was adopted with high success rates. before all these other altcoins came into being. it paved way for the development of other cryptocurrencies to develop. Having proved that the Block chain technology was reliable,BTC basically introduced and demonstrated to the world that decentralization from the regulating authorities is possible

The fact that it is the very first cryptocurrency, it can be considered as the mother of all cryptos.  It is most popular because all other altcoins are based on bitcoin.  All its price are based on bitcoin.  So if bitcoin does or fall, so as other digital currency.

I believe that Bitcoin is the most popular crypto mainly because it is its alpha, it started it all. It has proved its worth as well that's why it not just popular but loved.

Bitcoin was the first and nowadays people trusted to bitcoin. Price is also matter because when new people looking on price the joining and making btc more popular.

In my opinion.This is one of the reason why bitcoin is the most popular cryptocurrency. Bitcoin has a proven usage case as a store of value. It is pointing out that most coins are trying to engage in different differences based on smaller cases of use, such as prediction markets, buying things that are completely anonymous or adding a decentralized server name.Bitcoin has a huge lead as a store of value for every altcoin having an existing 8 years without failure. Bitcoin security has proven to be more than its counterparts by virtually every metric that goes beyond altications.

I think Bitcoin is going to be the most popular one due to the fact that it got to the market first ,Bitcoins is the first crypto currency launched,Bitcoin was first invented and the technology came into market first.6 years ago knew well about this technology and gradually it is proved to be digital currency when a couple try to buy pizza in exchange of Bitcoins in America.also it was required to increase the trust and demand of Bitcoin in the global market and develop a strong strength. Gradually, it makes trust and fluctuates too to threaten people little bit. Inspired from this, a different platform of Blockchain came into existence in the name of Ethereum, similar to Bitcoin Blockchain. most of the people now only trade with bitcoins except that there are thousands of more crypto currencies available in market. Bitcoin comes with a special many benefits.  And advantages like It's global currency, meaning you can transact to different countries it's easier since you don't need to convert your local money to their local money.The biggest advantage of btc is that users can sit in one place and still be able to make transactions easily and make a significant profit.You can earn bitcoin no matter what's your age, no matter what's your gender or race.It reduces the unemployments in the society.The btc is gaining momentum for exactly the same reason - the global consensus towards the btc is constantly being strengthened. In this case, unlike gold, the cue-ball is not only a measure of value, but also a settlement system, so there are many reason to popular.BTCBTCBTC

Because bitcoin is the first cryptocurrency, besides the bitcoin effect is very big in influencing the price of all altcoin, for example is a few days the price of bitcoin drop then altcoin price also drop vice versa.

it is because bitcoins is the largest the oldest easy to join and supported of many investors .and time goes by the value of bitcoins goes higher and higher and i can see in the future it will spread  all over the world.