I have classic OCD with intrusive thoughts and repeating behavior for example.

I connect emotionally to things, so if something breaks, I have a hard time throwing it out. I don't live with tons of things like the worst hoarders, you wouldn't notice so much. But it hurts me emotionally to throw things out that I attached to. I broke the handle of my cow mug. The mug is now in a top cabinet, sigh. I couldn't toss it yet.

Also I keep "good to have" items. Many actually come to use when either I need it or a friend asks "do you have a...?" I don't want to throw out things that can come to good use. Even those things I have no emotional attachment to I keep. Want a 1 gig harddrive? Didn't think so. A mangled network cable? Maybe it can be good for something... A surplus of key chains? A flashlight that doesn't work? Stumps of candle? I think my issue is that I can't really imagine what will be useful or not so I err on the "safe" side....

While OCD is a type of anxiety coupled with endless routes in my head, hoarding for me is a thing of attachment. Keeping things is a feeling of how things shouldn't go to waste, and consumption shouldn't be a primary thing. Prepping is for me emotionless. It's a thing of logic. I don't fear hard times, I just want to make them easier on me.