For me it's because I learned Ada in college.

18 year old me couldn't appreciate how beautiful a language it is but in my 40s I finally do.

2000-2005 College was teaching Ada?

2005-2010 my college most interesting (in this direction) language was Haskell. I don't think that there was any other language (like Ada) being taught)

Yes, I learned it in a course that surveyed a bunch of different languages like Ada, Standard ML, and Assembly

Ada is sometimes taught as part of a survey course in Programming Languages. That’s how I learned a bit about it.