How often do you use mods or CC?

I either play with mods for certain saves or play fully vanilla for most other saves. It's easy enough to pull out the mod folder and clean out the rest when I want to go vanilla. I also like exploring new packs with no mods in my games. Besides everything always has to be updated anyway.
I do find my modded games get thrown out faster because updated or not I start having problems with game eventually when I run mods.