I used to work every weekend and occasionally have part of Friday off instead of the weekend. I did it for years and hated it. I like me weekends now. It gives me something to look forward to towards the end of the week and, of course, there's the weekends themselves to be enjoyed.
Playing with your kids at the playground seems nice, I don't have any, but had my four year old nephew down here over Christmas and we did that a lot.