I've always been into babies and toddlers.
Then, I taught at an birth to 3 program for kids with severe developmental delays. A car seat person came out to check out the daily transport. She found the install and seat fit for almost all of "my" kids pitiful, if not dangerous. For example: FP T shield for a tiny kid with a g-tube, seats poorly installed, installed 2x each trip - for the ride in and the ride out.
Geesh - these kids already have several strikes against them (developmental delays, seizures, g-tubes, multiple surgeries, cerebral palsy, etc.) and while we're trying to help them at the program, the process of getting them there and home again was basically endangering them. . .
The lady explained the tech program and I was hooked. Been cruising the car seat aisle self educating every since and became a tech 2 years later.