What? I hope you're being facetious about comparing Mario and FFVII (which I hated and stopped playing by the way - but not because of the violence..) to something like Manhunt.
I'm not taking a moral stance about games with violence or blood - almost every game has violence in it to some extent, and blood can be used in an effective way to portrary realistic characters and real circumstances (such as a character being wounded and bleeding). I only question the existence of games where the designers specifically make blood and gore entirely the purpose of the game.
But that's not all games with gore in it. Jamicus is right; there's really no reason to take an ANTI-GORE stance and at the same time be perfectly fine with the fact that the only black character in FF7 reinforces an awful racial stereotype, or any of the other plethora of offensive things found in games. If you literally get squeamish because of video game gore then that's one thing, but it's a bit of a double standard to choose to take issue on a moral level with ALL GORE IN VIDEO GAMES and not with other stuff, especially since you've just pointed out that gore isn't your problem, gore as a gimmick is. These are totally different things.
If you're talking about just not wanting to play ridiculous games where you play as a serial rapist or a pedophile or some other type of awful game where you're supposed to derive entertainment out of being a disgusting human being, then that's one thing, but we're not talking about games that throw a 12 year old girl in front of you and go RAPE THIS THEN LAUGH ABOUT IT; we're just talking about gore in general, which doesn't necessarily need to be like that at all. So yeah if you're not playing them on principle because you think all gore is bad, that's a little silly, because it's not, and if you're not playing them because gore grosses you out, that's also a little silly but w/e I almost puked playing through fucking Jabu Jabu's belly in Ocarina of Time, but if you're not playing them on principle because you think that some of this shit shouldn't be made into a game then... well, that's still silly because this isn't all gore can be!