For the life of me I can't imagine having any group or organization dictate what I can and cannot do on a given day (within the confines of morality of course). That would feel to me like a severe limitation of my personal freedom. It extends to other religions as well by the way, I feel the same about headscarves for Muslim women or going to church for worship for Christians. The fact that I can get up on any given day, and do whatever I want to is one of the greatest gifts of life.