No.
I like rolling with my healer in my party through all missions. We roll a lot of characters together - DPS + DPS, DPS + Heals, Tank + Heals, Etc. It makes the game easier AND more fun to see both sides of our stories as well as how our characters interact in the quest content.
Not only that, but we duo Heroic 4-man's all the time.
Instead of ************ about something that isn't necessary, make some friends and play the **** game.