Paint Brushes

I know a lot of people who don't, but is there anyone else apart from me that just bins brushes and rollers after decorating? It costs nearly as much in cleaners as the brush costs and then you've got to do the cleaning, and then they're stiff and useless for the next job anyway.

Also, does anyone else keep paint? I do, but I'm realising that other than white gloss and radiator paint, I never use it again.