I'm a post-graduate who leaves near his alma mater and will often use the university library to study. I look very young for my age and girls will flirt with me, and though I often will smile back I find myself feeling guilty that I am liking the attention since some of these girls are 12 years my junior.

What the hell is wrong with you? My God thats like just a couple years past being a legal adult.
You sir, disgust me.
You are most generously welcome.
Is it normal for a 30 year old man to have an interest in attractive young women that are ambitious enough to work for a degree and a better future, and have intellectual interests?
Yes.
I really don't know what it is, but there's just something about those older guys. :p I wouldn't mind dating one. Although, we might be at two totally different stages in our lives, but I think if the attraction is there, and a connection was made... the age difference, or the level of experience doesn't matter too much. So I'd say its normal. And Angel made a good point, they are in college, so they probably are 18 or older.
But so does my 22 year old sister, which is why she is teaching 3rd graders instead of junior high / high school students ;-)
So yea, I think it's absolutely normal ;)
they're old enough to give consent. so if they consent... have fun!
meaning... they're COMPLETELY on the menu for you.
Happy dining.
High School Girls...... YOU'RE OUT!
ok, shes there for the money, but does he care, no!
Anyways, there are girls who are into older men, so...
...go for it! :)
Haha, gutted!
Litteraly every girl ive seen who used to be amazing is now below average to lifting. For some reason they tend to get fat, stop looking after themselves and wrinkle like fuck. Haha... every now and again their is an exeption to the rule, but not very often :D