Not that it makes it any less creepy, but such wide age differences were more common in your great grandparents age. A man went with whatever woman was readily available in the vicinity so he could have progeny to help with the chores. It was a survival issue. If one wife died off due to illness or childbirth, he needed to marry up again quickly so his children would have a mother and so he could keep creating new help.

It doesn't hurt them? How do you know? One day they might be like. Psh 8 year old gap sucks, and then they might suicide. Eh?

153, do you know how dumb you just sounded?

That's where you're wrong. Age does matter. A 13 year old girl is not developmentally stable enough to form any type of healthy romantic relationship with anyone, let alone a 21 year old man. People need to understand why you are considered a child for a reason.

FFML_314 is right. I do think age shouldn't matter, but when one of the party is still technically/legally a child, then it does start to matter. If the minor is sensible and waits till they are legally old enough before doing anything considered 'serious' then it doesn't matter as much. But as a teenager you tend to think you know best and so sensible doesn't necessarily happen all that often.