Bitcoin investments is a very promising investment which although seems to be of long term returns.most persons are not patient enough to wait till the value of Bitcoins rise significantly .
Soo in general how much should one invest in Bitcoin should it be "how much you can easily invest without stress " or "as much as you can invest at all cost"
Although I am aware it isn't a do or die affair
I would say as much as one is comfortable losing, investing in bitcoin is indeed a good investment, but still, we can not rule out the risks involved, the same as it is with every assets out there requiring investment.
For me, If I have the money, I can invest a million dollar, 2 million dollar, 5 or even 100 million dollar, as long as I have the money and I can comfortably do away with it for a very long time..
Bitcoin investment is much more profitable when done and left for the long term, than it is for the short term.
the amount is indeed very subjective as it depend on the financial capability of the person. that is true, how much you can set aside without worrying too much.