My folks are both entrepreneurs themselves, and have been running their own business or contracting as long as I can remember, so I definitely don't get it from them.

My girlfriend is of a distinctly less entrepreneurial bent, and occasionally gets frustrated, since I work such long hours. She works for a company that demands a lot (starts with G and ends with oogle), and she escapes as fast as she can at the end of the day, and so me being intent on my work when she leaves in the morning (or sleeping off a late night) and well past when she arrives home at night bugs her. So, given that I don't want to inspire jealousy, or poke fun, or whatever, my answer is generally, "I'm sorry. It's just the way I am. I'll take some time off this weekend."