I think bitcoin is now the most popular popular because it builds more than anything in crypto. The first point here is the price of btc itself, it keeps on increasing. It offers also among people who want to get a great chance to invest and help them in the future. There are still many reasons behind its popularity, one thing for sure is that no matter how it happens to move on, bitcoin will continue to exist until the internet will not disappear, and will become popular in the future.