I'm the same way! If the topic is brought up in conversation I'm hooked! It's a bitter-sweet situation, because I LOVE discussing everything, but it's so hard to bite my tongue and let others finished when I know they are wrong, haha. Or if they are trying to tell me about someone and I'm like "well actually..."

Nope, no one in my family are in any type of justice/criminology field. I was raised watching shows like Law & Order, Criminal Minds, CSI, etc. which lead to my huge fascination with the psychology of crime and serial killers. Until University I couldn't figure out the exact draw, but then I did a psychology minor which really pinpointed my interest.
Working in the BAU is basically top tier dream job for sure. John Douglas is a huge role model of mine and I am so obsessed with Mindhunter, haha.

Do you think your autism or other mental illnesses could help you somewhere in the field?
Maybe not necessarily as a member of K-9 unit, but you could maybe focus more on the dogs themselves and get into the training process?
I don't know enough in how autism and other illnesses might affect a career in this field - I would love some insight if you don't mind educating me!

Either way the world is always changing, and hopefully in a more progressive way if we can hope.
What might be a slim to none chance now can always change with enough determination and ambition!