I would sell all my bitcoins if someone absolutely made me.  There is no other way I would be selling ALL of my coins.  Whether the price dropped to nothing, or skyrocketed to 10,000 I think I would always have a couple leftover coins for some rainy days.

How does this have anything to do with contributing to the thread? What do you mean? If you mean that bitcoin needs new investors and more financial capital in the market, then I would totally agree with you. If you are just saying that "we" meaning "you" need money, then I nor anyone would know what to tell you.

We all need money, as individual, and Bitcoin within itseful. But eventually the Bitcoin will flow into the Bitcoin ecosystem, and as a result, those holding Bitcoin will benefit. So when it's all said and done, we all win. It's just a game of waiting and holding, and most people will give up before moon, which means the ones that remain will be rich.

The price get higher comparing to usd, then when it will drops people will buy it again...
This is how many folks doing thoses days.

I'm interested in this question because I am having some difficulties imagining a scenario in which I would sell "all of my coins"  because if news got out - or I became convinced that BTC was going to fail, then I have a hard time imagining that I would be able to sell before others realized such negative news before me.

Accordingly, I remain very bullish about the future price prospects of BTC.... so any selling would be incremental and as BTC prices are rising....

in other words buying while prices are going down and selling as prices are going up... and to always maintain a stash of BTC....

This question seems to be requiring us to speculate beyond the current facts in front of us.... because the fundamentals of BTC seems strong and development around BTC and its infrastructure seems to be ongoing - and funds are NOT really being diverted into any other alternative coin or project that seems more promising.  Surely, there may be some needs to diversify out of BTC, but at this time, NONE of those signs of diversifying out of BTC are suggesting to sell "all BTC," rather than merely spreading out some investment and/or hedging bets beyond merely BTC.

I will sell all my bitcoins if I lose my job.

once i become broke or having a financial need of money if for an example we got robbed
or something like that then that would be a nice time to cash out my coins

Recently i understood that if a popular altcoin price goes down i should invest there.
I did once, and sold mostly all of my bitcoins and then got a little profit of 0.5%.
Which is not bad, but the risk was high, so i would sell only if see that i need urgent money.

I will do the same.