I was 14. There was a cute boy in the previews so of course I was going to watch it. I fell in love with the series in the pilot episode. (I love secret identities on top of that as well).
What can I say? Hormones was a deciding factor here.
*pauses*
Wait... is it sad that not much has changed?
Seriously though, I would have been able to stick with it had it not been for the great dialogue between Lois and Clark. For me that sealed the deal.