I feel pretty much the same way myself - when I came back to cycling in 2016 after a long absence, I was surprised to learn that there was such a thing as a bike fit, and a younger me would have shaken my head in incredulity.I fiddle with bars, seat height (Seat not bloody saddle; I am riding a bike not a horse!) until it feels right.
In a few weeks, I may fiddle a little bit again.
Takes seconds to do.
Paying someone to fit me on a bike when I could spend that money on an upgrade seems like a big waste of time and money.
Snake oil indeed.
But having said that, I tend to forget that I started riding 'proper' bikes when I was 11 (I'm 59 now), and knowing how to set one up to feel right is instinctive. And I've recently come across people new to cycling who have absolutely no idea whatsoever. I recently lent a bike to someone who's about six inches taller than me and with longer legs, and it came back with the