Oh, time for an unpopular Star Trek opinion. I'm actually one of the very few fans that finds Data trying. I don't dislike him, but he's not even close to making my top 20 list of favorite Star Trek characters.
I guess for me, he's an interesting character, but I would find it difficult to have patience with him and his endless questions and such. He's also unintentionally funny which I guess for me isn't as humorous as say, Damar and Worf who are sarcastic and mean to be so.
Data's okay, but I don't get the obsession with him.