Another benefit with having kids that I'm looking forward to utilize soon is priority boarding, when the pregnant wife and I traveled in Asia, we made sure to use this excuse.
Longest flight I've done is also San Francisco to Hong Kong with the older UA plane (no USB, no entertainment screen on each seats) so 14 hour was brutal.
Only time I got bumped to 1st class was to Vancouver (pointless) and Montreal to Calgary (meh)
I don't see the value for a luxurious 10+ hour flight when I could use that amount for a nicer hotel at our destination.
If it was business, maybe not a problem but considering that our execs travel economy to the East for work, it would look bad if their subordinates fly 1st class