I don’t think you should use computerized special effects if the visual can be done practically. I mean, I like Robert Rodriguez’s “guacamole gun” more than I like CG blood spatter. I like real car crashes better than CG car crashes. I like to see a real person doing a stunt rather than a computer image do a stunt. And I like real fire over fake fire. There are a lot of movies now that are using CGI instead of utilizing the methods that ultimately make the movie feel more realistic to me. It feels like a lot of them are just cutting corners.
But there are movies like Sin City, LOTR, and District 9, and all those motion capture flicks that would suck balls without every bit of CGI.
