I'm a pretty long serving FO now. I, personally, don't want to retire at 65, I would like to keep flying as long as I can pass the medicals, 1) because I enjoy it and 2) because I'll probably need the money.
Therefore yeah, although my own career progression has been affected by this age 55 to 60 to 65 retirement age increase, and yes of course I'd love to get my hands on the LHS right the hell now, it would be hypocritical of me in the extreme to slag off at the captains who have been given the chance to occupy it for another few years. Because realistically, if I was in their shoes, of course I'd do exactly the bloody same, and tell any FO's who whinged about it to cry me a river.
Lucky break for you guys, well done, enjoy the extra years.