But even with a magic baby and magical dogs, you mentioned only spending 10 minutes a week vacuuming. I have no idea how that is possible with babies and dogs unless your threshold for when something requires cleaning is extremely high.
Before having a robot vacuum/mop I would have to go and pick up every piece of food and wipe the floor after every meal. Sure, the whole kitchen didn't technically need a mop, but there's usually also food in other places simply through the action of cooking. We cook every meal for the baby and most meals for ourselves.
Do you just leave the food and crumbs on the floor until your weekly 10 minute vacuum? In which case, yes, the notion of a robot vacuum must feel idiotic to you. The notion of a vacuum would also feel idiotic to me in that scenario as you can surely just use a broom and a dustpan for such a small amount of cleaning.
You obviously don't have a pet or a baby.
Make that 15 minutes of vacuuming AND mopping 3 times a day for a baby. Suddenly it seems very attractive to have a clean house while not having to find the time during the baby's sleep and nap time to do it manually.
You could argue the same for a dishwasher: I used to only use a single fork, glass and pot (eat out of the pot). A dishwasher seemed like the most idiotic device anyone could own if that's all you need to rinse every day. Until of course you add more people to that equation...(and maybe cook more than just pasta)