Well, I've never had a cat.....sooo....I'm probably not the best for advice here. But I didn't think litter training was too difficult. It has to be easier then potty training a puppy!! And 6 months old is pretty young, I'm sure he'd take to it fast. Maybe you could try to litter train him during the day.....and when he's trained he could sleep in your room at night with the door closed?

My friend has a cat named Milo. For a couple of years in their old house he lived in the basement. He has been strictly an outside cat since they moved (at least 6 years). Her parents are NOT "pet people." He is allowed to go in the garage though, and he sleeps in there quite often. He is a shorthaired orange tabby cat. I don't think he's ever had a real problem with the cold (and we got alot of snow). He used to love being around people, but now he just kind of comes around when he feels like it. And he always has cuts from getting in fights with other cats. If they didn't live on a dead-end street, I'd bet he would have been hit by a car by now.

I can't have a cat because my family is allergic also. And if I did have a cat, it would live inside. I've known of too many cats killed by dogs, cars, etc. But I think it depends on the cat and the situation/place you live. Some cats are alot better at staying around then others.