hahaha, don't sweat it mate. I'm right along there with you. I was surrounded by people dropping buckets of cash for GPUs back at the dawn of deep learning and was therefore naturally tempted to buy Nvidia's stock price (30$ at the time). In the end, I shied away due to the high PE too.

I take solace in the fact that some of biggest regrets or mistakes that Warren Buffet & Charlie Munger say they have made are those that you don't see - the deals they could have done but didn't and, in retrospect, should have.