Ugh, I hate visiting people's houses who have their dogs inside all the time. They always stink! No matter how tidy the house is, it always stinks the same. When I was a kid we had two Briards, they had really thick, long coats made for hearding animals in thick snow. They were perfectly fine outside. In late spring, they got shorn, and by late autumn their coat had completely grown back again. In summer, on the one or two hottest days, they might spend the noon hours in the laundry where it was quite cool. And it would get to between 38 and 41*C (I think that's like 110*F)on the hottest days. And they were fine!!! When they started to get old my parents started to let them be inside all the time which is fair enough I guess. The house of course started to stink and I was embarrassed bringing my boyfriend to meet them for the first time cause of the way the house stunk. And this is even with wood floors and leather couches. It would be WAY worse with carpet and fabric couches!!! I believe so strongly that dogs are outside animals. Unless of course you have no sense of smell and you never invite anybody over to your house.
The only excuse for having a dog inside I think is if it is really really old, or it is a shorthair breed and you have extreme winters, or you have extreme summers and you don't have adequate shelter for them in your backyard.
As for those strollers, mightn't they be useful for taking non-harness-trained parrots for walks? Carrying a carry-cage for a long time would make your arms get tired quickly and it would be hard to do things while you are on your walk. Or even for harness-trained parrots to have a "home-away-from-home" where they can relax and rest when going for a long outing, and also for a safe place to put them if you need to use both arms for a while.