As to the third, making bets with Stephen, doing anything with Stephen, is lots of fun. The press makes a big deal about Stephen being a great physicist. That's surely true, but it's not everything. What they don't talk about is that he is a great friend and colleague who is respected and loved by everyone who knows him.
Stephen is also notorious for his gleeful physics bets. This one happened twelve years ago when he and Gordy were at a meeting on Jeju Island, South Korea. Controversy about there being such a thing as the Higgs boson provoked Stephen to challenge Gordy to a $100 wager. Gordy, with absolute convictions about the Higgs, and his own proven inclinations toward betting, accepted, of course. His hopes were not to cash a check, but to frame one.
So, in answer to your question, living with a physicist who makes bets with Stephen Hawking is fabulous. Mostly.
Q: Do you understand the Higgs boson?