As a normal, boring user that does nothing special other than browse the internet and the occasional "casual coding" -- what am I supposed to do with 32GiB of ram?
Title. Besides setting tmpfs to use 10GiB of it to store downloads.
All jokes aside, most desktop apps and web browsers, nowadays, use ungodly amounts of RAM. The pessimist in me blames Chrome and electron, but in reality it just comes down to programmers being more accustom to having access to more memory than they need.
I say relax and enjoy the lack of slowdowns - having too much RAM is not a problem, but having too little is. Your only concern should ever be trying to avoid the latter, and with 32gb of RAM you should be good until the next big Discord update. (slight /s on that last point)