Interesting topic-I love and have worked at startups for the past few years and my soon-to-be spouse has worked at a big corp. for an equal amount of time. We both work in tech,and he is sympathetic to my crazy hours and understands why I have to work on a Saturday, midnight, and "have to answer this email right now."I think as long as you unplug and have devoted time to your personal life, everything works out. In the past, I let work dominate my life which diminished my personal life. I think I am engaged today b/c I set time aside to grow in that way. It's all about boundaries and understanding, that's been my experience.