In my barbarian run, I even got close to dying ...
The point is that if you don't have a healer - not just cleric but a healer - you should feel it...
One could argue that you felt it. O_o
Sure. One could argue that I was really feeling it while soloing as a barbarian while ONLY throwing and shoving. Yep. I was definitely running out of potions by the harpy fight while ONLY shoving and throwing with one character.
And, did you forget I said I did a fighter playthrough also, doing at least most of the surface, without a healer and just potions, with Gale, Lae'zel and Astarion? Didn't feel it there either. Lots of potions left.