Hi Scott C,
I am 35 and in a similar situation as you are (although a bit older, hope not too old still) since I am going to start ground training for ATPL. I did PPL a couple of years ago, and as many of us here, have this dream job and life ever since I remember, so I decided I should try and hopefully, achieve it.
My main concerns are job prospects when I finish everything in 1,5-2 years time or so, probable recession, terms and conditions, pay to fly as potential only choice, and least important, being the "grandpa" in the theory classes
compared to 18-20 yo lads. Even considering all these big uncertainties and hurdles, I decided to go for it...
Best of luck, we sure need it!