In app purchases have ruined so many games for me. I don't even mind their existing so much if they are a simple 'cheat' (and the game isn't impossibly slow to

In app purchases have ruined so many games for me. I don't even mind their existing so much if they are a simple 'cheat' (and the game isn't impossibly slow to progress without them), but what bothers me is when they are the only way to get or do something (especially if the 'thing' is to progress any further in the game). I have quit games at this point when they no longer became fun for me, and I don't just mean fb/mobile games, but even proper (read: PC) games that used to be fun before that element came into them (e.g. Star Trek Online).