I would love to retire today but certain factors will make me stay longer. Healthcare is a huge issue for me. Even if I go to 65 and have Medicare, my spouse is 4 years younger than myself and when I start to add up that cost I will stay longer than I want to. Bid back to 787 FO and fly maybe 60 days a year for $200k. Easier to stay.
I would guess some airlines are pressuring the FAA to change the rule.