My girlfriend got me into it three years ago with her DVD's. Before that, it was constantly: "You love Superman, why don't you like this show?".
Simple answer: It wasn't really a question of like or dislike, just one of perception. When it was first announced, I heard it was for kids. Also, I saw Teri Hatcher (at the time about four years out from Lois & Clark) on some interview show, and she was asked about it, and said something to the effect of "Oh no, I'm too old for this one.", and that further put me off.