Trainee train driver ( ex guard, internal hire ) checking in here at the age of 31.
For the benefit of the OP, I passed the ATPL theory ( distance learning with Caledonian ) this year alongside the train driving theory so to do it as a fully qualified driver with experience should be achievable!
I'm taking on the wise words of rudestuff and others on this forum, paying as I go. Single Engine CBIR > SE CPL and then see what the job market is like!
We and others may be starting later than others but we can look back in 30 years and maybe take pride in the fact we experienced other industries
As ex long haul cabin crew I actually find the shift work at my particular rail depot as fatiguing as the flying. We finished at 1am Sunday morning, had Sunday day off and then in at 4am this morning.
I'd regret not going for it and there's nothing wrong with personal development and a backup plan.