i usually but stop loss in my trading and yeah i get sad when they fall but i know if i'm paitent i shall get rewarded! 
I will still remain with bitcoin I will not cut from bitcoin because bitcoin did a lot for me when there was a tough time for me and I can forget the way bitcoin help me and the fact is thats its price can also go down some time because its a very good currency and it want to be on the top of all currencies because its mission is to end the world poverty and for that bitcoin need to be more popular and strong so bitcoin price will be always high.Each and everyone of us has prerogative decisions on which is the best thing to do if it might happened. On my own opinion, I will hold some of my bitcoin as much as i can since on that time is falling. Well, for sure it will back to the track on its stabilized value which it is already proven many years. As of this moment bitcoin is still increasing and already reached $20,000 but somehow it fluctuates due to some investors might have there own taughts and speculations about bitcoin.