I skipped over about 3 pages here, so ignore me if this was already said.
I don't think anyone in his or her right mind would want to DATE a 15 year old. Especially anyone who's ever lived with one.
However, I believe there are a great many people in the world who would f*ck a 15 year old.
Therefore, in a sane & rational persons head, the dating would be more of a means to an end, rather than an end in itself.
Which then begs to be asked, "Well what if the 15 y.o. girl is mature enough to want it, yadda yadda yadda."
To which I must respond - pick any person over 20 in your life and look at their past relationships. Can you honestly say, they've been 100% sure about what they've wanted in a relationship since they hit puberty?
Most likely no, and pbbly still no to this day.
It's all trial and error...
I'll let you figure out what category the 30 year old taking a 15 year olds virginity would fall under, in the eyes of a 15 year old ten years down the road.
(You know, when they regret that they could have had a meaningful relationship with someone their age, but instead wasted their youth fulfilling the empty fantasies of a drastically older man who was only interested in them for sex anyways.) Protip: P*ssy feels the same, whether it's 15 or 45. Warm, moist, tight.
Why waste time picking a four-leaf clover, when you could just pick a three-leaf clover and pretend it was lucky?