Then we've answered your question about why people "can't just mind their own business".
You're just able to twist anything and disguise it as empathy "for the children" and couldn't care the least what the children actually want.
If you're just going to assume that anyone who disagrees with you does so on the basis that they're just a giant piece of shit out to hurt people for no reason, then there is no discussion to be had, and no progress to be made.
Maybe open your mind to the possibility that that's not true, and that people simply have legitimate concerns for children, much like yourself, even if they are misplaced. If you want to actually improve the situation you'll try to empathize and educate them rather than instantly lambast them and treat them like human garbage.