A sound decision, and as far as bad news go, it's far from the worse I've heard. I'm glad its not about your health. I have to say I'm a little jealous of you, you were able to do what I wanted to try a couple years back. Unfortunately I did not have your drive and I realized how much time it would consume to make all my 3D stuff to a quality I could sell without feeling like I ripped people off.
You have a really good thing going on IMO, the comics are quality stuff for a really low price, and that's why I buy them all, quality work should be encouraged. If you compare with a lot of other places and comics, it's hard to find better. So more power to you my friend, your 3D stuff will be missed for sure, but we still get really nice comics nonetheless.
Now back to my 3D work I go, inspiration is plentiful these days
Dragoon.