I think the best thing to do in your situation is to work on a project you really enjoy on the weekends. It'll be the equivalent to or replacement of games or other forms of entertainment. Try to write a blog relating to your project on the weekdays, even before you launch your product. By the time you launch, you'll have a good audience. Even if your project doesn't get traction, you technically didn't waste your time for nothing, because it was an enjoyable experience. :)