Yeah thats somewhat true, but sometimes there's enough time to cast a banish inbetween those heals, heal/smite can quite good for pve (farming) though.
Anyway I got my char to 20 a couple of days ago and I'm now in perdition rock. Ascension was a bitch, more than it ever needed to be thanks to noob players...(you'll know when you get there if you havent already)