1. Roulettes are currently broken, so the OP does have a point. (That said, my leveling roulette was only 37 minutes last night on MCH, compared to the 60-90 minutes others are reporting.)
2. To the OP: Your first job to 60 is the only freebie, and after that you can get two jobs to 15-ish off quests, at which point you're expected to hit dungeons. Everything else is meant to take blood sweat and tears. It took me all of the 2.x to get all the jobs to 50. That is, almost two years. Of course you can't expect to replicate that in the course of a few months. You're not supposed to; the game was really designed for you to gear out one or two jobs at most. You're supposed to get most of the classes into the 20s, and then decide what you like best based off that.