Interesting, it totally read like a rant against guide dogs.

In thirteen years of having a guide dog I have never had one crap in a public place indoors for someone else to step on.

I don't get up at set times.

A dog eating off your TV tray is totally horrible. I mean that is nasty and an ill trained dog. If these are your only experiences I can see why you don't want a dog, but I don't think your theory is at all well researched. Yet, I agree that people who don't want the responsibility should not have a dog.