My biggestw problems with Bitcoin is that I never have enough of it. 
Seriously, the biggest problem are sudden and big ups and downs in the price, although that is not the case at the moment because it's pretty much stable
agree with you I also experienced a problem with the price ups and downs. for some reason when I want to sell my bitcoin. the price be lower and a very long time to ride then after I sell directly price going rise Seriously, the biggest problem are sudden and big ups and downs in the price, although that is not the case at the moment because it's pretty much stableThis maybe I out of luck lol
but I prefer stable prices