Muslims can't eat pork because god said so. Why? Because he said so. Sure, we could speculate, but why bother, we are told not too and its tradition after all.
Allah said nothing about eating humans, I guess that must be okey-dokey. Pigs must be more important if you look at that way. Shit... without a god dictating this stuff we could never figure out that child abuse and rape are wrong, but pork, well now you're talking. It's a good thing human morality is grounded in god otherwise we would do horrendous things like eat pork.