I am not anyone's financial adviser so right now I am speaking for myself, yes investment is risky and this character is not only seen in Bitcoin and crypto-currency even off crypto investment are risky.

But with the time I have been able to be active in Bitcoin I can say the risk in Bitcoin is lesser than many other investment opportunities in the long run.

The world is going tech and Bitcoin is the leading digital asset in the world right now and the want for Bitcoin would always increase, I would say invest according to your capital when in investing in Bitcoin rather than saying what you can afford to lose. If you are a long term investor and you only invest in Bitcoin I still don't see how you can lose.