You can do both: Do you job well, take pride in your work, and go home at the end of the day.
So much of your employment relies on things that are outside of your control. Even when you have a great job that you love, it won't last forever. Your job isn't a marriage, or a parent-child relationship. At the end of the day, it's just a job.
I don't want to be part of things that are average and marginally accepable, and I have a profound dislike of the status quo. It doesn't matter if it's work or shooting hoops with my kids or seeing how long I can stand on one foot - a desire to do a job well and have fun doing it are not mutually exclusive. I'm confident my attitude and approach are not unique to only me.