Robot vacuum cleaners...

...suck, for me. I had one a couple of times and they just blow. Unless you have a perfectly square room with no random unexpected items laying about (or misaligned chair), or placed in a way not suitable, it will just constantly get in the way and get stuck. You likely have to dish out BIG time for one that's even half decent.

Besides, I actually like cleaning somewhat (don't tell my wife). I like the three-pronged approach of floor cleaning: dustpan and brush for the big stuff, vacuum to get rid of cat fur etc, mop with my hi-tec bucket to finish off.

I also prefer to hand-wash dishes instead of using the dishwasher. They just take too long and yes, they sterilize real well but I always find bits left between forks and stuff, and they aren't conducive to odd-shaped things, so I have to handwash half the time regardless. Waste of time.