Are you ever been taken aback at the audacity of some people?

I belong to a recycling group. If you have something you no longer need, you offer it, rather than trashing it. If someone has use for it, you set up a time for pick up. Lately, the group has been taken over by people asking for things: Computers, game system, even a pool table. Have people just lost it, or do they just not understand? The most frequently “offered” item are moving boxes and packing materials… What makes people think anyone is just gonna give up something expensive just because you asked?