I'm 24 and from what I'm seeing now, most kids like the OT but tend to gravitate more towards the PT due to the TCW cartoon series, as well as the idolization of the character Revan due to the KOTOR games. Revan is more or less deified for younger fans ranging from 13 to onward, and there are even SW vs. videos saying he could fight Luke.

My parents were the first generation to have seen the movie, and I grew up watching VHS copies of the OT. While I've just recently gotten into the EU and appreciate its elaboration on further aspects of the SW universe, nothing I've seen compares to the characters such as Vader, Yoda, and Luke. If anything in watching documentaries and seeing kids dressed up as clone troopers/Darth Maul for Halloween, I'm glad to see the series having lived on.