In was too complicated in TS1, Morty was so hard to gain as a friend. He was always cursing out my Sims and hanging up. lol (I miss the cursing out my Sims, though, :D ) In TS2 though conversations would be better and it did make Sims refuse to talk about particular subjects (autonomously) and put their fingers in their ears and or stand with arms crossed, like they were thinking, really? lol, it was only good if you wanted to change subjects etc. In TS4 I fear (though I like it in TS2) it would be the same old same old. Interests: painting, painting, painting, writing, writing, writing, playing pc games, games, games. I don't think these Sims have enough personality as it is, and Maxis seems to use those three things plus one more jogging, working out, jogging etc. etc. for Everything in this game. So, I vote no because we already know what they would use as interests.
