So you're saying that your "common knowledge" (from talking to other pilots who do CDO's, not just you) tells you that most are sleeping 8 hours a day?

Okay, let's go with that assumption for a moment. You get back home from the CDO... say 0800. Let's say you go to sleep at 0900 and sleep for 8 hours. That puts you at 1700 waking up. Report for the next night's CDO is 2100. In order to sign in on time you need to leave your house 1 hour before sign-in. So that gives you a grand total of 4 usable hours at home during the day... none of which are during normal business hours (in case you happen to be running a side business).

Explain to me again what makes CDO's so attractive? Seems like you're spending considerably LESS time at home (awake). And then there's that pesky anecdotal evidence where virtually every pilot I've ever heard who liked CDO's talked about their primary reason for liking them being all that extra time they have at home. Just not quite adding up, is it?