I agree that you won't make money or a profit. The coop money you will probably never earn back, but I can cover the cost of a sack of feed (£12 or so) by selling boxes to colleagues for £1 each.
I think the eggs taste better because a) what the hens eat and b) because they are much fresher.
I've had to kill chickens (and hate doing it), which is sad, but I've never taken one to a vet. It makes no sense to get a £80 vet bill on a chicken that cost £20.
We've brought chickens inside the house when they're ill (we have tiled floors) but don't do it on a regular basis. If chickens weren't incontinent, though, they would make great indoor pets. Surprisingly smart and pleasant animals. This will also sound weird but if you pick one up, they also smell nice - kind of like a new puppy smell.