"I would sell all my Bitcoins if..."  price reaches to $5,000 for each

"I would sell all my Bitcoins if..." exchange rate is double the amount when I purchased my coins.

i would sell all my bitcoins if i had enough number of it to buy my dream house and luxury car(which i think won't happen with bitcoins alone but still , anything is possible)

i would sell my all btc if i get double price of from which i buy and if i need money very urgently then i also sell my all bitcoin i also sell my bitcoin if there is some interest ing site come that accept bitcoin for increasing my bitcoin because investing is also a good way to increase bitcoin

I would sell all my bit coin if I really need some cash and there is no other way to get them so I well exchange them better that searching for loans

"I would sell all my Bitcoins if..." If the price went to a 5k dollars per BTC

I would sell all my Bitcoins if bitcoin price is $666. 

I guess I will not be in need of selling my bitcoin for the price I target for. At that price bitcoin probably replaced the fiat currencies. I can buy anything with bitcoin itself then why I need to sell my bitcoin. I will just use my bitcoins for my everyday living.

I would sell all my Bitcoins if if noone has.
pretty simple

That is a good reason indeed. However, would you re-buy atleast the same amount of BTC later on (when you're in the possibility to do that)? I would (and did), and I bought more BTC than I've "lost" by selling some. ^^