You say preying, but I'm glad I was able to rent out space to store some things when I moved cities and told myself I'd move back. Turns out I didn't move back, and only went back to pick up a few things and give away the rest. I doubt I would have been able to detach from those things if I took them with me.
Were the rental costs a waste? I suppose I would have saved a few hundred dollars if I could have just gotten rid of the stuff earlier, but it would have felt like a personal loss instead of a natural detachment.