I personally work simply because I must. If I lived in a time other than now, I'd likely be hunting most of the day, or moving my people, or growing and foraging food, hell, I'd be working to survive.
When I go to work, that is what I do, though a perk of this society and all of our beautiful technology is that a large portion of the money I earn can go towards me eating quality foods, improving my health even more so than has ever been capable, take time for my girlfriend and I, or with friends, to go out for the weekends, during the week, or to travel around the world, anything I feel like doing, I can work towards.
In my opinion, with this society, working makes life easy and simple and much more enjoyable, I also believe that a time will come when we don't have to, a world of abundance will be birthed even more so and leisure time will be maximized.
For now though, I'm happy with the status quo.
In regards to your situation however, I do believe that by a standard of morals that I set in my life, you should work to suit your wanted lifestyle.
Work 40 or so hours a week, enjoy the rest of your time and compensating for the fun and enjoyment with the money made? Or have a mediocre time all of the time, with little money to compensate for the fun you have, which must make you feel a little bit bad, surely?