I put £25k into ETH about 18 months back. Not long after my £25k had dropped in value.
Its looking pretty healthy today though. Doubled up. With hindsight wish I had put more in.
Crypto is a very volatile and risky investment though so the gains can be big but the losses can too, the swings can also happen quickly
I posted on the Finance & Investment thread that I had been assessed as having almost no aversion to risk however i've never touched Crypto and i'm surprised that so many non investors do
My sensible head says if you have doubled your money then it may be worth cashing out your original investment and investing it elsewhere then if the Crypto crashes you aren't out of pocket