If you can't even manage to spell biology, you're disqualified from using this stupid "argument". Oh, and the word "nature" seems to be a problem to you. too. Are you related to the Drumpf? Or are you Swedish/Norwegian? (Please don't be, please don't be...)
Sure, children under 18 are not childrend[sic]. But they ARE children, and ought to be protected against sex-predators like you. Girls don't become women until AFTER puberty, somewhere around 16-20.
What's an "honest puberty"? Is that like "legitimate rape" or "alternative fact"?
I'd say "our times" is a very sex-positive time. Everyone (of age) is allowed to have as much sex as they want, with whoever they want, as often as they want, AS LONG AS IT'S ALL AMONG CONSENTING ADULTS. (In most western countries, that is. There are countries where you get stoned for being raped, or for looking the wrong way at someone while not married to said someone.)
Most men find child-molestations to be an atrocity. Why do you want to rape children, when there are experienced adult women out there?