I would sell all my bitcoins if I will be in strong need and will not have any other way to resolve my need. Hope with my heart that this kind of need don't arrive never because my bitcoins are destined for a very noble thing.

That is the right thing to do. You sell once in a month? I sell weekly part of it to take care of my weekly expenses and my salary is intact. I don't need to spend a single penny out of my salary as bitcoin takes care of all my basic expenses. And mainly I used it to convert it to my local currency when I am in need of hard cash.

How much would you sell if profit is more?? Sell all or just a part of it??

I don't think selling all bitcoins would be a good idea, unless if you have decided to quit bitcoins and diversify your investments to some other products like gold, stocks or real estate, If yes then you can sell all your bitcoins but it is better to keep a part of it with you for the future so if the value goes down in future you can reinvest in bitcoins.

...the bitcoin chief would be arrested.

That was really funny and shocking for me when i first read this this channel does not know about the reality how could be MTGox's partner Bitcoin chief.

I would sell all my bitcoins if my country prohibits their citizens completely to use , to store etc BTC. And probably, I would invest that money to stocks who regularly pay dividends.

I would sell all my bitcoins if the price went up to at least $10.000

 I would sell all of my bitcoins if it is giving me double or triple profit on my investments or if i've got something problem about money and then i didn't found a way to fixed it so i think my investment is a way to solved them

I would sell alla my bitcoins if someone don t stop to dump the price all the time