How do you feel about healing coming from (relatively) dirt-cheap potions and wands, ie the default 3e assumption?PCs shouldn't be able to self heal, PCs should rely on external forces (like divine intervention) for healing. IMO.
3e essentially made the "cost" of healing trivial (to anything other than very low-level PCs).
4e went further, reducing the cost of long-term healing to zero (by getting rid of long term healing completely).
The interesting thing for me, is 4e's approach is more in line with depictions of the heroic in popular media than 3e's. The likes of John Carter and John McClane could be knocked around or knocked out, but they'd be fine the next scene/day. But you never see them guzzling healing elixirs/antibiotics/taking hit off the healing pipe (wand of CLW).