My family has had dogs my entire life, I have never known what it was like to not have one for more than a few months maybe. Some of them like larger breeds were outside/inside dogs, they all were spoiled rotten and loved so much, for example. Natasha was a rotti, we were given her by a friend when she was two months old, we had no idea how to raise a rotti, so the next day off to the vet we went and all the advice we could get, we followed the advice to the letter, she stayed inside 24/7 until she was about a year old, then she was inside/outside dog, sometimes she stayed outside with her own dog house for however long she wanted, but she was always allowed inside whenever she wanted, and we had two cocker spaniels as well.
She never was out when it was cold or excessively hot or bad weather, she knew she could get on the beds, she had no idea how large she was, at her healthiest 130lbs. We lost her at 6yrs old, it was devastating, anyway, i think that you can do both worlds sometimes, but not all the time, primarily they should be inside dogs, i would feel to guilty other wise.