miss crabcakes -- i'm so glad you didn't take offense, b/c i didn't mean any. and you do raise a darn good point. you are doing some really fantastic things right now, it sounds like, trying to make a dog you really don't like comfortable.
i guess i didn't phrase my question very well. i guess i am wondering what happens over the long haul. you don't sound like you would be very happy doing this on a continued basis...but the dog could live a LONG time. and a bigger house, which is what it sounded like you were saying would be the best solution, wouldn't really change anything.
i do think mrs1885 has good points about the training and exercise...and definitely about the cat aggressiveness. but again, you say you're already unhappy and resentful about the tasks you've already taken on...
it doesn't sound like you really are bonded to this dog enough, or like dogs in general enough, (and maybe that second part is an unfair statement?) to be a part of those processes. and you should be a part of those processes b/c a dog in a household doesn't really belong to just one person, he's a part of the family that everyone is responsible for (imho).
i think what i am trying to ask, and taking awhile to get to! (sorry!) is: bottom-line, would you be happier if the dog was just gone? and is that fair? and what does that mean for your relationship if something else happens that you don't like? would it be your way or the highway?
and that is not negating what you are doing right now for the dog...because i highly applaud you for being kind to an animal that, at heart, you really don't like!
good luck! i know it is difficult in these cases, and i really do wish you the best!