I feel bad for being in this thread....however, I was actually thinking about a similar question last night.
Girls that are 18 and 19 have a completely different mindset than girls who are 20+. Would you go about sarging the same way? I would think a girl who is 18 wants to hear she is pretty; where a girl that is 24 knows that if you are telling her she is pretty, you want something.
And hold the creepy comments; I just like feeling young again
Plus, there is a wide range of age groups at most clubs these days.