A lot of people keep their dogs outside, not because they're mean, because the dog is to destructive, large, or one of numerous other reasons.
We have an inside dog--he's a Chihuahua/Pikenese mix, but when he wants outside we let him out. We also have an outside dog, she's a German Shepherd. We kept her inside until she was about 8 months old and she loved it outside In the winter when it's cold we let her come in at night, but she goes out the next morning.
Mabey when she's older and calms down some we can bring her in more often, but not until then.
We leave her out mostly because she is a guard dog. We live in the woods, and robberies and break-ins have been reported where we live Inside she would never know if someone was out side thinking about coming in.
Our small dog stays inside because he small and we wouldn't want a cyote or bear to get him( we have seen them)!
We'll thats all I have to say!