I keep my old VHS tapes, but that's only because I have one that was never released on DVD, and very few others. If you are honestly trying to get rid of them, donate them to the local library. Yes, they would prefer DVDs, it is the current video standard (Blu-Ray will need a few years to catch up, not everyone is going out and buying a new player at the moment), but they still will take them. I think. I haven't donated anything but books to a library since before DVDs so I'm actually not that sure.
Wow, I just dated myself. Ack. ^.^;