The regret I have about Bitcoin is that it wasn't as popular as this, if not, I don't think I would have missed out on being a millionaire in the USD through it.
The problem with the fact that many people who are interested in Bitcoin now are still not millionaires is not that Bitcoin was not that popular before. But in the fact that they did not risk being pioneers. Or did not have enough knowledge at that time. In ether way it is not Bitcoin to be blamed by not being so popular and accessible. It is easy to be involved in something when the conditions are already so developed. But it is difficult when everything is just beginning.