Would you become a Professional Pilot again?

[J.A.F.O.]

I'd be gutted blowing 50 grand on training and then going back to PM

And how gutted would you be if you got the the age of 50, were still in PM and still had your £50,000 in a nice safe high interest account?

I do a lot of hill-walking

Then you'll know that it is often the steepest, hardest climb that gives the best view. Mountains, life, it's all the same.