Wow! Hope my the babysitter who looks after my kids doesn't think like you. She has a decent rate. Cheaper than the daycares. Does that mean my kids get mediocre childcare?
As for first aid, most people in my place of business do not know first aid but you can bet there are designates that do including employees and definately building staff does. Whether mom and dad have first aid is of no concern to you. Your concern is the business you run and if you're equipped to handle immediate emergencies like choking and CPR. And if that is asking too much and then you shouldn't be looking after other people's children. We're paying you, remember??
Wow...that's harsh...and yes, you are paying us...but we don't work for you! We are NOT your employee. We are offering a service just like any other bussiness.