I am in it for the McToys. I am certain that when the economy collapses in the near future McToys will become the new currency. I am stocking up while everyone else is giving them away. Shhh don't let anyone else know.
Seriously, I am a rookie at geocaching and got into it because my father-in-law wanted to do it with the grandkids. My oldest son is only 4 but has fun on the "treasure hunts". I am the only one that logs our finds on the net though. My FIL has no interest in the online portion of geocaching. To him its a way to get his grandkids to go hiking with him. I enjoy posting logs and reading others experiences with the cache.