Oh this'll be a fun one, it will.
Destroying nature? Child, we as humans have been doing that ever since we realized that we could question our life. Humanity((the emotion, not the physical being)) has been, for a long time, an un-natural occurrence. We've trained ourselves that instant-gratification is more important than anything, and that as long as the human race advances all is good. Fuck the rest of the world.
Humans have not been natural for thousands of years, why should we suddenly stop that trend? Nudity is natural. Having sex is natural. Killing for food/self defense/protection of area is all natural. These things are frowned upon, though. C'mon guys, make up your minds. Do you want natural or un-natural? You can't just pick and choose.
I never said fast cars weren't NORMAL. I don't even deal with the word normal, because while it's definition is unchangeable((let's just pretend it is)), what classifies as "normal" changes with the passing time. I said fast cars were not NATURAL. NO motorized vehicle is natural. This cannot be argued, it does not exist in nature.
Before making an assumption at what a "normal"((try not using words with such fluid meanings)) man with intelligence would decide to do, you should first at least some-what fit that criteria. Currently, you're living in your safe little "normal" world, sheltered from real life.
Oh, but it's just fine and dandy for the chick to deal with it. Yeah, you'd have an entirely different opinion if you were a chick and had to do it.
The want for fast cars is natural, that does not make the car natural. The same "need"((it isn't a necessity, for the record, it's a want, you can live without it)) is what makes us ride rollercoasters, but giant steel structures perfectly planned out so that a vehicle can maneuver around it sending humans at speeds that now reach over 100 MPH definitely do not happen naturally.
The child's mouth and your nipple are both things that are already there. This, automatically, makes your point null and void. However, I will further prove that your original statement is wrong. Just as you believe the male nipple is not suppose to feed a child, the penis is not suppose to go into a mouth. It was meant for two things, and two things only. Urinating and producing off-spring. Blowjobs do neither of those, and as such, are not natural.
What about a single-father? Without the mother-father difference, no real psychological harm will be done to the child. And what about single mothers? Growing up without one of your parents alone can do psychological damage, but we aren't taking children from single mothers because of it.
As much as I HATE when women BAAAAAWWW over childbirth, she has a point there. None of you would hold the opinions you do if you had to switch shoes with a pregnant female from impregnation to even 2 year of life. None of you.