I get where you're coming from but I want to give you a different (my) perspective.

I never play dps because I find the very thought very boring. It doesn't matter for the fun factor whether I have to play finger twister getting my rotations right or whether I only have to spam my two dps spells.

That healers have no dps rotation to speak of fits me just right in that regard because I have to put the least possible effort into the thing I care about the least. In fact I would even prefer it if dungeons became tough enough that healers don't have time to dps.

I also like the thought that the roles that a party depends on the most, are the roles that require the most dedication exactly because solo content can drag on like this. It fits and making the role more accessible just waters down its identity if you ask me.

That's just my view on the matter.