Kiss the BooBoo?

Issue: My boys ba"h are VERY clumsy. Like, I can guarantee that in a day they will stub their toes, knock their heads, bang their knees, etc. at LEAST 500 times. That is alot of boo boos!!! 499 times out of 500 it is because they are not careful about what they are doing. So...my dilemma...if the boo boo is as a result of carelessness, do I have to kiss the boo boo?

What do you think? Am I the most uncaring Mommy? I just want my kids to be careful and make it through childhood with as few bumps and bruises as possible!!!