is there any price point that would cause you to pull your money out of bitcoin?
Not really. Selling locks in your losses. By the time the price gets so low that I truly write Bitcoin off, I'll already have lost so much that losing the residual value won't make much difference. I'd rather hold and hope something changes. A trader would sell on the way down, then buy it all back at the bottom, but to do that you need to watch the market like a hawk, guess correctly where the bottom is, and have nerves of steel. I'm not that guy.
The thing is, "price" is the wrong question. It'd be existential threats to Bitcoin that would make me sell. Like flaws in the maths, new legislation or competition from a new coin. Now, I am a fan of certain PoS coins, and if it looked to me as though one of those coins was kicking Bitcoins arse in the markets, then I'd sell my BTC because it would be over. That's not what's happening today. The fiat isn't flowing out of Bitcoin and into some other crypto-currency. It's crypto-currencies as a whole that are crashing. And I don't see a reason for that. The value proposition is still sound. At some point you have to have some faith in your own judgement and just hold on.
.