Geocaching works on many levels, it can be used as a tool to get the kids out of the house as already mentioned. It can be a kick up the a**e on a Sunday to get us out of the house when I'd rather stay in & watch an old B&W war film. For me, the best aspect is the ability to disseminate local knowledge. As tourists we have been to places & seen things that we would never had known about were it not for caching. The most memorable being an old abandonned gold mine in South Africa that was way off the tourist route, hidden in a forest, we could hear wild elephants stomping about as we walked up to the cache area, stunning! In Egypt we found a cache hidden above the valley of the kings, the view from the cache site was awe inspiring. I'd be the first to admit that many caches are s**t & not worth the effort but as in all things, you need to choose carefully.