100% of my cash is into ethereum. Please tell me im not making a terrible mistake?

I dont have any 401k, savings, or anything of the sort.

If I have any money extra, it goes into ETH.

Ive been saving like that for 3 years. I have a sizeable amount of ETH. More than 10, less than 100.

If ETH was to crash, it would… well…

Please tell me Ill be OK?