You've possibly got another 40 working years ahead of you. That's a long time to be doing something you don't like, whilst getting a crick in your neck looking up when ever an aeroplane goes overhead.
Can't help with advice on whether Darwin is the go, or not. I can say I was 26 when I started learning to fly(27 years ago) and 29 when I got my first full time flying job. It's a **** of an industry when security is considered. However, if I had my time over, I'd not do too much different, I'd certainly not look for a different profession.