From my own observations, roughly one in three redundant pilots will not or is unlikely to come back whenever hiring picks up. Those who have already earned their pension and are financially secure are discovering the beauty of finally having plenty of time and energy for themselves and their loved ones. Once one gets well into their 50s, lifestyle preferences tend to change a lot. People are no longer keen on being awake and working at silly o'clock or living in hotels for weeks on end. As for the younger lot, a good number of them use this an opportunity to permanently change careers. Particularly the ones who weren't quite happy with their job pre-COVID and were considering a career change way before the crisis. That's been their final trigger to act.