Bitcoin is the next step in money evolution. Same as paper post gone on the Internet and appeared e-mail, the same way paper money gone to crypto form. Bitcoin took all the best in itself from other payment instruments as paper money, gold and credit cards. yes, bitcoin is used by 2 millions of people now only, but it's only cause of bitcoin is not understandable to many people and that provokes skepticism. I am sure that soon bitcoin will be the same normal thing as credit cards.