I don't think you need too much explanation. Yes, of course we pay for the food, craft, insurance, etc but first of all it is your business. As we all know business has to bring profit. I believe you did not open the day home just to help out parents and have fun. You work hard for that money. You feed kids, you play with them, you talk to them, you are there for them when they cranky and it is all for 10-11 hours a day. Most parent make more then $20 per hour while you make only around $50 a day. So, just relax and don't let it bother to you.