From special interest to a career?

Hey all :)

First time poster, long-time observer and autist here. I am wondering if anyone's special interests led them to have a career in that particular field?

Firefighting and fire trucks always fascinated me since I can remember and it has been my mainstay special interest for 30 years now and I have been a volunteer firefighter for just over 10.5 years in 2024.

\~ PK