I agree with Cid, but to elaborate, pretty much every class should have capped VIT at any given time in the game (at the current stage of development in the game, of course lol... this will change hopefully).
I don't really bother to look at the non damage-boosting stats like Def, Eva, M. Def, etc., one... because they don't have a huge impact regardless of what you're doing, two because I have capped VIT all the times, and three because there's only 1 tanking class anyway, and I don't play it (not to imply that a difference of 20 defense will make much of a diff. in this state of the game).
Having super boosted VIT via point allotment will save you sooooo many deaths in Leve parties especially when you're slightly low for whichever star setting you're on. As a 32 CON with max VIT, I was able to survive Pieste breaths on Dunesfolk where DDs were dying. I only survived by a 20-30 HP each time, but I would've died without that VIT. Please no flames for getting hit with breath as a mage... we all know that hate can shift right before breath happens, and you can get unlucky in that sense.