Its worth it if you have them.
Its +15 STR and +15 VIT on you (Vitality from these passives also rises your HP)
I don't use the +DEX passives cause I dont have any points left to use, they make MND and therefore my healing go down and I almost never miss so I dont need more DEX.
These abilities are usefull if you got a crafting class too, for eg I use the +15STR stats on my Blacksmith since his primary stat is STR.

They are not 100% necessary, so you can get by not having them for the time being, keep them for later.