Well, I've been doing it for nigh on a decade now, with no appreciable disc material left in a couple of places. I'm still able to walk (albeit with cane) and have no numbness/paralysis. Some autofusion has occurred, so I assume it's still going on.

I think it's going to depend on your symptoms. We've discussed here several times that the only times surgery is mandated is when there is risk of paralysis, similar serious nerve damage, or death.

Doc