You might have a nice and paid off house by then, the question is: can you still afford to pay the utility bills and putting the kids through school working for a EU low cost?
I'm happy with an EU LCC, and won't be going anywhere else until my youngest has left school, which will put me firmly in my mid 40s.
For some of us, the chance to see our kids grow up whilst earning decent enough money is most important. I could join BA now (A320 rated etc etc), but the prospect of spending much more time away just doesn't appeal to me any more. I'm no longer single and in my 20s,