What an interesting question. I had to think on this a little bit. I've come to realize as an adult that many people have their "thing." For some it's quilting, others photography, perhaps baking, or car repair, or...the possibilities are unlimited.
For me, quilting is my "thing." If I go a while without doing some, I get cranky. To me it's relaxing and rejuvenating and just what I need when I'm totally stressed out.
I also sew for the camaraderie of women. It's such fun to get together and sew and chat and the things I have learned about life over the years could fill a book.
So that's why I sew.
I hope you get to quilt today!