I was recently asked by someone I very much respect to address "the" question. So I started to write the answer in a post... about five times without any luck. The "Why does a 20-something join a Reform Congregation" question.
As a kid, Shabbat meant brisket. I loved that. Every once in a while, my mother would get inspired and feel the need to… cook? No, she always cooked in those days. It wasn't until many years later that dinner was more likely to be ordered than made.