I have to admit...
If I had the time, money, and patience to stabilize every blank, I would. Even solid woods that aren't a challenge to turn would turn more easily and polish up better if stabilized. Just the convenience of not having to seal the grain before finishing a pen would be nice. Plus, I'd get to buy more penmaking toys to get myself set up for stabilizing. :redface: Obviously, this is overkill and very impractical, so I don't do it.
Bottom line, I enjoy turning stabilized wood. It's the best of both worlds--resins and woods--with none of the drawbacks of either. If there's one complaint I could make about stabilized wood, it would be that it's TOO easy, and my skillz would suffer for it.
As it is, I proudly blow up many unstabilized burl-thises and spalted-thats. I keep a pile of splintered remains by the lathe as a warning to future turning projects: abandon all hope, ye who enter here.