I think it is a lot of time wasted to buy a lot of stuff you don't need - and where is the real savings in that?
I will sometimes use coupons but only for items I would normally purchase.
I think a lot of the "extreme couponing" could lead to hoarding and other unhealthy behaviors. Not saying that would be the case for everyone - but wow, who really needs all that at one time? I guess I just don't get it. I have a friend and her daughter who are into it though - like a "sport" or something.