Bitcoin is really great and I always regret because I didn't hold and don't have capacity to buy and hold for long term because of daily needs. I'm really struggling in my situation even though I want to invest and hold but I can't. Good for those with capital to invest and believe that bitcoin will grow more and more as the days goes by.
Don't be bad about it though, if you've profited out of those times then probably you did the right thing and it's not like you know what the future holds, if you did then probably you're going to be richer than you can imagine. That's the other problem, it's not fair for everyone. Some have the money to invest and some just don't have the money to do so