I see what you are saying. Let's face it - most girls in their late teens early twenties look better than us older gals I accept that and understand men will be men. I just think that some girls in porn look YOUNG and it just makes me ill to think of these old men jerking off to them. And then to consider they may have children around the same age - how do you find a girl attractive who is the same age or younger than your own child?
I personally make a conscious effort when 'enjoying' porn to look for a more mature looking cast. Not all of them are 30's or 40's I'm sure, but they have to at least look like they aren't kids. I was doing some porn surfing and saw some really disturbing nasty stuff with really young girls and it just got me thinking about who is really watching that stuff.