Lughaidh...I don't know if it's an American thing or if it's just a "my family" thing, but there seems to be a perception that spending the time to learn a language that you don't "need" to speak and that gives you no economic advantage is a waste of time. I've had people ask, for example, why I haven't spent all this time learning Spanish (which is economically useful in California) or a language that might come in handy while traveling, such as French, Italian, or German.
Ellen...fair question! Short form: Because I've been passionately in love with Irish traditional music since I was about 13 and, being an "all-or-nothing" sort of person, that passion expanded to include Irish culture, history, folklore, and language. I actually wrote a blog post about it a while back, which you can find here:
http://www.bitesizeirishgaelic.com/blog ... ve-affair/Redwolf