Kelly, there are lost of things that your villagers do that seem to be a waste of time, but if you try to remember them for later, then you may start unlocking more secrets. I remember seeing someone say during testing that letting the villagers go off and have a break from their tasks, could be a good thing.....lets them have a bit of a recharge.

I haven't actually worked out if this is true, but I like the sound of it, so I let them have a bit of fun as well occaisonally