Unlike uncomfortable shoes the saddles have a point, not chafing/ allowing for the pedalling movement while also supporting part of the riders weight.

Wide/cushiony saddles prioritize comfort of the latter point over the former. They will support more of the riders weight more comfortably, while neglecting the comfort of the movements of the rider. So on shorter and easier rides the cushion saddle is fine, the longer you go the more such a saddle will cause discomfort.

If your saddle works for you by God keep using it, im just trying to explain why other people use different ones.

The thing is if you would’ve stuck with that setup for a month or 2 (assuming a not overweight person, and the saddle being correctly sized/ the whole bike fit being correctish ) the agony would have most likely subsided. And it likely wouldn’t have existed if you had built up/ trained yourself to it in smaller steps. Starting with rides as short as 15min.

It’s almost like saying running 10km is impossible after your first run in years. Or hitting the bullseye in dart is impossible after your first game. The saddle requires training. The position and movements on the bike require training. Because if not trained your body will be sore, if you overdo it.