Dear Japan, waiting until someone is mentally mature enough to handle a subject will not, in fact, automatically produce a monkey limited to their hormones and desires upon discovery. In fact, if some of the people I've met are any indicator then they'll likely just consider it something they're not too interested in and focus on other areas of their life.
Also I do remember reading a study that said reading pornography at too young an age does legitimately mess up your perceptions and expectations of relationships and sex. Also if it's the wrong kind of stuff it may (and apparently has) traumatize you into the opposite direction.
Porn is by no means a thing you just do and move on from, stuff does mess with your brain wiring and I feel like we know this as adults and didn't as teens (which may be why people try so hard to keep things 'pure' and try to taper some of that from the Youth). But this does make me wonder if we've gone TOO far down the rabbit hole sometimes.
I remember reading a manga about a bikini armor warrior trying to get the hero to like her without breaking him in half (she had Superman levels of strength) and the credits from the author said something along the lines of "I wanted the outfit to be more lewd but after I submitted it, the publisher said it was too much. I thought to myself 'that's too much? What do they mean?' and had to take a step back and realize I'd warped my sense of normality and become way too desensitized and had to agree that it was too much."
Like is that us? Have we gone so far into the Cavern of Degeneracy that we're actually just up for pretty much anything without even realizing how far off we are? Where do we draw the line and think "Yeah ok I've gotta pull back a bit"? I feel like I'm pretty desensitized to most everything here and dear lord is there some messed up manga on this site. Should I step back and reconsider my usage? I unno, I'm rambling but I guess it'll be a fun thought experiment.