Problem is many are looking at this from the perspective of FF11, lets look at it from the perspective of pretty much any other MMO or RPG out there, if you are a Ranger in Rift you don't get to heal, if you are a Hunter in WoW you don't get to heal, does it make the class any less entertaining no it means you are specialised at what you do.
I'm all for solo play, but at the end of the day MMO's are community games and you're supposed to play them together, your post just proves my point in that if you are unable to survive on your own you need to get help.The survivability needs to be there. Without it, you could very well just cock block most melee classes to progress unless they find a healer to group with. The survivability could be less effective, actually, that is the case now. However, removing it would be more of a head ache to the melee who want to progress or farm mobs solo.