Why only FATES?

[Rgbg]

My highest class is only 26 oder 27 but I started worrying about leveling up other classes around lv 15 which is when I stopped doing any quests. I consider Arcanist my main and I only follow the story line, I leveled up Lancer by fates/dungeons/hunting log alone (saving Leve for my crafters), as Arcanist I'll need THM and CNJ as well, so no questing for Lancer either. CNJ is already 18, I plan on not leveling higher than 34 (blah) and hopefully easiest for him will be dungeons since they insta-pop for healers, as for THM ah hell, I hate THM so I'm saving all the quests for him to get to 26 as fast as possible. As I'm enjoying Lancer a lot, too, I guess I'll have to level PUG for some cross-class stuff lol...I'm not even past 30 and already it feels like a grind XD worries worries... Do I even wanna know how it is past 40. You're all scarying me.