If i kept every bitcoin that I had , when I had the most, I would have >1mUSD at todays prices. Sucks but yeah, I made a concious decision to hedge my risks back then.
Well, then thing is, they never invested real money. So it is no that sad actually. Like the guy that had 10000 BTC on a harddrive that he mined 5 years ago on a laptop and then the harddrive ended up on the wasteplant. Not much investment right there, but sure it sucks to lose out on so much money
This hugely depends on your personal finances. If you have disposable income, why not throw 5% of that into a high risk/high reward investment. The upside is huge and the downside is limited to -100%. If you are also young , then this sounds like a snapcall to me. (It was for me). But be sure to not be emotional about it, and make decisions on fundametials , not panic and price.!!!