I did the same. I started with Doom Emacs and then a year later decided to start from scratch and build the computing environment I wanted. But I think the experience of Doom showed me what was possible, what I liked, and what I really had no need for.

I make small config changes every day and its super fun to use my computer this way. I wish everything was configurable like Emacs.

I'm currently polishing one of my packages for publication, and for that do a lot of testing in a vanilla Emacs. It's shocking how many of even (to me) absolute core functionality is actually customization I did a decade or two ago, and then forgot about.