It depends on the situation - What about the poor house dog thats crated all day waiting for its owner? I think "alone" is tough on the dog, whether it's inside or out. I hate hearing people say their dog is "crate-trained" - how would you like to be confined for hours at a time where you can't stretch or walk around or go to the bathroom?
I see the real issue as proper care -and uncared for , whether in or out, is the worst! I too hate seeing a dog that always tied on a chain or confined to a little square kennel.
My sibes happily live outside 24/7. they have a huge area fenced inbetween several buildings they have access to. They sleep in a greenhouse in the winter - they get incredibly warm and then run out to roll around in the snow--(could this be doggie sauna?) They go to the dogpark to run everyday and we take walks on our 4 acres. Huskies love to dig, so their kennel has lots of grass and open ground for digging dens - they have favorite pits all over the yard. They are well cared for and loved deeply.
I work from home and bring them in ocasionally - they love to nap inside - but as soon as they're awake, they want OUT!
When I was trying to get a second dog, I inquired about huskies that were rescued and recived a couple really nasty notes from people who think keeping a dog outside disqualifies you from being a good owner - I think they don't understand this breed. (These were on petfinder, not huskie rescue sites, who DO understand) However, if I lived in the south, no way I'd have huskies outdoors in constant heat. You have to do what's best for the nature of the breed.