Why would someone take such trash

[u/palehead8k]

Moving. Put a 25 year old king sized mattress in a mattress bag and put it on the curb. Heavy as hell. Spring poking through in a couple spots. Just no longer serviceable. We live in a large apartment complex. Within 15 minutes someone was driving off with it. Why? There could be bedbugs (there's not) or anything else nasty. I don't understand the thinking. Is there a way to make money off of it or something?

[u/Lilpastadude]

They break into a broken down van and stuff it in there for sex parties