All I can say to that is, the more comfortable the fit, the more you will tend to enjoy the ride.
I remember, as kids. We would grab another kids bike and ride it. It didn't even matter if the bike was even close to the proper fit. We just grabbed and rolled! Some kids would have to stand during the entire time they were cycling because they were too short or small. OTOH, some kids were so tall, that they couldn't sit down even if they wanted. Their butts just hung over the rear wheel, anyway!
I think that what we mostly do is approximate. I don't actually believe that most people get properly fitted. That's too bad! They should! We're all adults, now!
- Slim