As someone who is a parent, I completely agree. I thought so before, and think so even more since.
AMEN!!! And a philosophy that is frighteningly common.

I always (in regards to parents with this philosophy) say, "You want to be a deluded doormat and put yourself through this ****, fine, but don't subject me to it, because I didn't sign up to be a martyr!" Anyone with half an ounce of observational skill can see that it doesn't work! Not now. Not later.

I do see this as babysitting. Do you have a moment to yourself or are you having to watch said child every minute? If I'm watching someone else's child, to me, that's babysitting. Even if the child's parents are right in the room. Btw, I have major problems with people who think if they are in a group, they can just kick back assuming every single person with a uterus will automatically watch their child. Guess again.

Ok, before I go off into major league rant (which, on this topic could go on for pages) ... It is YOUR space. It is NOT cute. He needs to either step up (which, due to his philosophy, won't happen), or go somewhere else and find someone else to take advantage of. You don't have to put up with being subjected to this and he needs to be made fully aware of that. Behavior in one's own space is not necessarily appropriate when in the company of others, let alone as a guest in their home.