I wake up around 7:30 AM during the work week and always attend evening meetings (anywhere between 6 - 8 PM starting times). It's no big deal most of the time but sometimes I just want to sit at home and do nothing because I'm tired from work. To me it's no different then if I was part of a book club or something like that and we met in the evenings.
Even on the weekends I still go to evening meetings as well. In fact, I tend to go to meetings more during the weekends (have more energy and time) but also need at least 1 or 2 during the week.