These dumb questions (love those answers, everyone) put me in mind of the things people say to you if you don't have kids. Like. "You don't have kids? How come?"
Does anyone ever ask someone who's HAD kids to justify THEIR decision? "Hey, why do you have kids! There is so much overpopulation and pollution and unwanted kids! And you need THREE of them? Why? Isn't ONE enough???"
When anyone has asked me, I say, "Because of the miracles of modern science and chemistry."
I know it's off topic, but it's kind of the same thing- justifying your life choices. Like "why do you need a car? Can't you walk or ride a bike?" etc.
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You can catch more flies with honey than with vinegar. That's great...if you want to attract vermin.