Leveling is stupid.

[Vespar]

It is so profoundly stupid that I can only level one class by questing, and that's if I do the MSQ with it. Side quests do not give enough experience to level, even when combined with hunting logs, which also give a pointless about of experience.

What are you talking about!? I made an alt because I wanted to replay through the story and I've been doing nothing but the MSQ and ignoring ALL side quests so I can focus on the story alone and other than a handful of leves so I could rank up enough for turn ins in my Grand Company I'm already level 49 and haven't even hit Castrum meridianum yet and that was with someone running me through dungeons unsynced, so I lost all the exp from the mobs in those dungeons.... I also haven't completed the 2nd tier of Hunt logs.

You are CLEARLY doing something wrong if you cant level up enough from quests alone. I probably have enough side quests to level a full other class and maybe then some... If you're on a server with the Road to 60 buff it should be even easier! Also, did you do the Hall of the Novice final trial? It gives a 30% exp boost ring that lasts until level 30. And if you got the SB collectors edition items, the Ala Mhigan Earrings last until 50 and also give an exp boost.

Have you used food? Are you taking advantage of Duty Roulette bonuses? Duty Roullette Levlling and Alliance raids give a metric ton of experience once PER DAY! There are a ton of other ways to level too besides just quests. Fates, Guildhests, leves and guildleves, challenge log, hunt log,etc. You cant possibly tell me your struggling to level up....
But if you're just griping because your not 70 now, You could always take the lazy route and pay $25 per job and buy your way to atleast 60. But with how easy and quick it is to level this would be a serious waste of money.