I played with the roommates for a couple of days now and finally found the fix. I built three different homes. Put everything I could think they might need in them and they still complained and moved out. I found out that most of that doesn't matter. I had four rooms created for roommates. I put in beds, shelfs, desks, computers, coffee pots, mini fridges TV's, radios, shelves. Still moved out. But when I bought every single skill book available in the bookcase, they were all happy and I've been playing this game for three days without another threat to move out. I was able to delete the coffee pots and mini fridges from their rooms. So every sim doesn't run in and out of all rooms eating and drinking like nuts. They all use the kitchen as intended. As long as there are places to set out personal inventory stuff, they are happy. Also helps if you have MC Command. Fill all their needs as soon as they move in so you're not combatting prior need issues. I also set motive decay in MCCC at 75. Hopes this helps anyone still searching for an answer.
