There's something so fundamentally boring about him. These days he looks hotter (it used to be that he was a complete DYEL, didn't seem to lift weights at all), he's making an effort at the gym. But he's still very vanilla, not sexy at all.
His half-brother Joseph Baena (the son that came out of Arnold creampie'ing his Guatemalan maid) is far far hotter.
I mean, look at him. Supposedly the Kennedy children were awful to Joseph (at least at the beginning) and would shun him, and also resent him because Arnold paid attention to him and kinda liked him better because he's more masculine and a gymrat like himself.