I was commenting on the quality of the decision because different people are at different development stages in their late teens and there is a massive difference between dating someone one's own age and twice their age. Hell, there is a huge difference between a 16 year old dating a senior in high school and a 22 year old in college.
You first: What is the minimum age you think someone should be able to make their own decisions about having sex with a 42 year old?
There is a distinct lack of off center buttholes.