I do like antagonists. I often like them more than other characters.
In one of your earlier posts, you called Pterano a "douche", which is another term, in my opinion, for "jerk"; it's not a word synomous with "annoying". That post made me think you didn't like Pterano because he did bad things (like try to trick Littlefoot into telling him the stone's location), which confused me because you like Sierra even though he threatened to kill the children (remember his comment about feeding the kids to sharpteeth?).
It just didn't make sense to me that you dislike Pterano for being a jerk but you liked Sierra who was a bigger jerk. I didn't know you were referring to "annoying", as the term you used, to my knowledge, doesn't mean the same thing as what you were going for.
And so what if there are members who are obsessed with Pterano? Why should that bother you?