What and idiot I was...for not believing in this...

I don't think you are an idiot. It's still not late, moreover it's very early to grab a piece of Ethereum pie. If this is headed where we all suspect it's headed, this is still a great time to get in.
Price seems too high compared to the very beginning...but you could be right
...like it is for every company compared to early start up times... google, facebook, apple, uber, tesla... many people lought when they heared that facebook is worth 1bn - would have been a nice invest as it was 1 bn.