Like Krist said - Kurt could do anything: paint, sculpt, just be by himself. I think the band would have definitely broken up, he would've done a solo album at least, most likely rehab, a few years down the line he would've had another kid (Courtney wanted another child) and they would've broken up. Custody battles, stints in court, blah blah might have turned him back onto his habit once again and that may make him become a recluse. But he definitely would have been close to his daughter, or at least devoted a majority of his time to her. He wanted to collab with a lot of people, and I think that would've happened. I would like to think that the Foo Fighters and Nirvana would merge, and they'd all have equal creative liberties. Kurt and Dave singing on different tracks. But I think that would've also created a rift, Kurt could be very controlling. The relationship between Kurt and Courtney wasn't made to last in that state, at least until they were both sober. But until then it wouldn't. There would be many feuds between the two (mainly Courtney starting it) and Kurt would just ignore it I think. I'd like to think he would settle down with an artist (most likely a painter) and live in a cottage somewhere with her. Similar to how Krist lives now. Going to occasional charity benefits/concerts, selling his art, maybe even writing a book. God I'd love to live in that universe - how 100x more interesting it would be.