How on earth are trial versions bad user experience? My #1 wish when I browse an app store would be to look for apps (especially games) that offer trial version

How on earth are trial versions bad user experience? My #1 wish when I browse an app store would be to look for apps (especially games) that offer trial versions. I don't want to try games that shove ads down your throat or monetize through in-app purchases, I won't pay for a subscription for some mobile game I just play to pass time waiting for something, but I'd like to try the game before I pay for it since lots of games I tried were a lot less fun than I thought from the store page. Trial versions would be perfect.