You're wrong, that's all there is to it, no matter what "it" is.

Why, why, WHY is the life of a child - who contributes absolutely nothing to society - worth more than/more important than other humans?  Is the worth of one's life inversely proportionate to one's age?  "Oh, they could grow up to be the person who cures cancer!"  OR, they could grow up to be an unemployed alcoholic, a rapist, or another worthless breeder who does nothing with their lives but pump out 2.3 more kids.  So why is it more of a tragedy if they get killed than if a 50 year old with priceless life experience, a doctorate, etc. were to meet a similar fate?  I mean, if anything the kid is lucky to die young - they never have to experience a broken heart, having their dreams crushed under the heel of a less intelligent, less considerate individual than themselves, or the brutal reality that their life has the equivalent exchange rate to a new car driven off the lot - as soon as you're born your value begins to plummet.  Awesome.  Whereas the aged individual is more likely to cure cancer as they have likely viewed the problem from countless angles and only have that one left to investigate.  So there you go.  Fuck kids.