I like statting a few VIT on almost every class, even though I play softcore. Nothing wrong with more HP in my book, and the small sacrifice in damage is trivial to me.
I also like finding armors with Enhanced Effect and +Vitality (+Parry is nice too but wrong topic for that) as it will add to the overall physical defense.
Many people find it useless because it won't do much for damage, but there is more to the game than that. Some have even tried pure Vita builds and they were pretty interesting to say the least.
[x] Not Useless
(in my opinion)