I wouldn't even entertain the thought personally. This job is tiring enough, and I look forward to closing time each day to unwind. Do you have your own children? That can play a huge role too.
And I'm sure we all do the "TGIF" happy dance at the end of the week LOL! To give up your evenings and some weekends is going to burn you out very quickly. When will you even have time to run errands, or do something nice for yourself? Just my opinion...