My buddy in Florida has just got his first airline job at 50 yrs.old, flying regional jets around the US, currently right seat as first officer while he builds hours to eventually move across to the Captains seat.
He only began flying 8yrs ago, first he got his PPL, then went on to gain other tickets including his CFI ticket spent the last 6yrs teaching students to fly but always wanted to fly commercial stuff, kepy firing off applications until he got accepted by Delta to go into their training programme. 12 weeks of intensive training in the classroom and in the Sim. and he has his wings. Okay he could probably earn more money doing something else but he's not bothered, he gets by and is living the dream...
So never say never
PS. I got my FAA PPL at 63yrs. young !