If you tell your friends and family about Bitcoin without giving them any sort of in-depth financial advice and they go ahead and invest, how do you deal with it when the market dips very low and they silently blame you for losing them money.
This is why you always preface financial advice with; "Don't invest until you've done extensive research".
I just make sure that they fully understand the risks before investing, and make sure they don't invest more than they can afford to lose.