Who here uses a monopod?

Thanks very much for all your replies.  I don't know if a monopod would suit my needs as I don't (at the moment) do any wildlife or sports photography, which I see most people use it for.

As I said on another thread I'll be going to Venice early next year.  I have a Velbon tripod that is sturdy yet pretty small for my carry-on luggage.  I was thinking that maybe a monopod would be good for Venice, especially when it gets a bit darker....I mean the portability and fact that it wouldn't take long to set up, plus it doesn't take up much room on the ground.

I know that buying the best is the way to go, but I'm not sure that spending $300 on something I might use makes sense...