This is a topic we should discuss more on HN. Both my wife and myself are currently working on an evening MBA program. People are shocked that we are able to do it at the same time, take classes together, etc. I don't understand, because I find that we end up supporting each other, motivating each other, etc.

Along the same lines, I would definitely love to run a company with my wife one day. Most people I meet are aghast when I suggest running a company with a spouse. Is this idea really that rare?