I love it because it keeps my floors clean.  I can't live without it because everyday after breakfast, I turn it on and my 1 year old chases it around the house while my 2 year old goes around picking up toys so "Mommy's Woomba won't get it".

I've never had any problems with it at all.  I don't mind cleaning it everytime, all you do is dump it out over the garbage can and clean out the brushes once in a while.  I still have to use my old vacuum once in a while and I can't believe I used to have to do the whole house like that!  Ugh, vacuuming is, like, so barbaric!