Absolutely, Junem; call it fortyeleven and stay as long as you like. I'm sure there are lovely people in the 50+ group as well, but I totally get you staying where you already know everyone. After all, these "age" divisions are meant to address different concerns of different ages (I'm certainly worrying a lot more about my potential loose skin now than I did in my 20s, ), so if hanging out in the 40+ group a bit (or a lot) longer gets you what you need, stay! Anyway, a couple more years and I'll be there too!
Sept2012 (and others) I remember how excited I got when I first joined 3fc- so many people taking spinning classes! I love to spin! Especially angora and silk... Derrrrrr....
Everybody else: I want spring!