I would have a hard time understanding any American under 45 YO not taking or shooting for a position with DL, AA or UA. Hell I know 3 year FO at jetBlue who will make $155k this year. I've seen his pay slip. He works his tail off by choice but isn't working any harder than a EK pilot. When you see some guys getting wide body slots in year two and the upgrades continue to come quicker and quicker it really is unprecedented for the last 30 years.
You throw in a union, FAA, great ATC, buffalo wings, NCAA football and never hearing mam/sir ever again and the decision obvious.
Lastly just look at the profit share these guys are getting. Astounding.