Am I hurting myself riding everyday?
You tell me. Does anything hurt? Do you feel good?
Is it ok to take an easy ride with the wife and kids if I am taking a day off?
Yeah, you should have an easy ride every week. You also might want to find or make a training plan to be sure you don't overdo it. Btw, one of my favorite cycling quotes is "Go short" by Grant Petersen. The idea is to have fun, and maybe pick up a quart of milk, not become a divorced triathlete...
Should I ride as hard as I can everyday to work or take a couple days and just take my time?
What are your goals? Weight loss depends mostly on diet. If you aren't training for a specific event like a tour or charity ride, just add on more miles or intensity slowly. There's no rush, and adding too much too fast will cause you grief.
If you want a simple program... do one long ride a week, a hilly ride, a fast ride and a easy ride or two.