Bitcoin can survive and thrive as long as people have faith in it. the massive price high of this year is only more proof of what faith can do!

As long as people attribute value to it - it will remain valuable.

It may not reach those highs again, or it may go higher if a major fiat based economy finally admits it can't go on with it's perpetual debt.

Thanks for your warning, but if you believe it cash out and walk away.... I have a feeling you will be keeping hold of some coin "just in case"