Lots of reasons for me. My first intro to ASL was in elementary school when we learned a few songs with some signs. I thought it was really amazing, but I had no clue at the time that I could learn more, I just waited around for another opportunity at school, that never presented itself. In junior high, we had an ASL club that met after school, but I wasn't allowed to stay late, so I never got to participatel. In high school, we had ASL classes, but by then I already had a few years of spanish under my belt, so I felt like I should just stick with that (and didn't, our spanish teacher at the high school was scheevy, ick). I homeschool my own children now (8, 5, 3, and 1) and we have been buying Signing Time videos and incorporating them into our homework. My two daughters (5 and 1) are especially interested in it, and my 5 year old is pushing for us to learn more so that we can be fluent.
We learned a few signs when my 5yo was a baby, and taught them to her. I'll never forget her signing "more" at the speed of light when she wanted more of something delicious. We also taught our oldest the signs too, and then taught our next two babies.
Signing Time has been a great tool for our family to learn signs, and I've also been using an online signing dictionary (I've probably got close to 200 signs now in the last few weeks), but I want to learn sentence structure now. So we're looking at options for classes. I may try to get certified to teach baby signs through Signing Time Academy to start with and take the online courses they suggest. I can't do any classes in a school because my husband is about to start Bible school and I don't want to be away from my kids. I want this to be a family affair for sure.
My husband also works with a deaf man (he has hearing aides and can hear and speak some, so I guess that would be HoH? His wife is profoundly deaf, as far as I know their 3 young kids are all hearing) and we'd like to be more friendly with them and cultivate a relationship with them.
We've felt like God is calling us to the mission field, but in what way...we aren't sure yet (hence the Bible school). We thought at first that maybe God would take us to a foreign country, so we are also learning spanish (though it's sinking in MUCH more slowly than ASL, even though I took 4 years of it as a kid...and we tried learning Czech too for a while). ASL seems to be coming surprisingly easy to me though (which honestly shocks me), so I'm exploring if this might be the arena God is calling us to. My daughter declared today that maybe God would bless us with a deaf baby (by birth or adoption) someday.
In addition to understanding sentence structure and the nuances that would help us communicate properly and respectfully, we also want to understand the culture.