although now this etherum is decreasing and you have a lot of money you do not have to buy etherum with all your money because even if buy a small amount of etherum if the high price must be profit and we stay be patient to hold.
in fact, every user has his own reason to participate in the business of crypto-currencies. Proceeding from But Each of us has some means to participate in this activity. In any case, even despite the promise of the etherium, it is better to invest in the crypto currency the money that you can risk.