Well, we are talking about a game in which the chief villain (for 95% of the game) is basically nothing more than a computer program Belthasar created. Think about it - Belthasar knows that FATE is going to go crazy trying to kill Serge when he "resurrects" him, and he's cool with that. Not to mention the 40-some other people that are recruited by Serge and thus in harms way of FATE/Lynx. He probably knows that Wazuki is basically screwed for life because of his plan, and Miguel might as well be dead. Plus, the apparitions are all ticked off at Serge, but it isn't his fault he's alive - it's Belthasar's.
I dont know - I just get the feeling that the guy's actually an a-hole.