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.
Its because we have different status in life. Rich people can invest huge money in Bitcoin and can hold even for long years without the need to sell because they're capable to live comfortably while waiting for their money that they invest to work for them. Its a different situation for average/poor investors because most of the time we are counting on our investment. Even we're aware to not invest the money that you can afford to lose or the money that is meant for important things.
Anyway since its Bitcoin, holding is really profitable and much better if you can bear waiting for long period. Its risky but still worth it.