Because the ALIEN has him pinned up against the wall, ready to implant that tongue into his head and he's telling Lambert to get out of the room, blood's coming out of his mouth, and, well, you can tell the man is desperate and gonna die horribly. That's why it bothers me. Come to think it, Kane's death still gives me a jolt, too. But, I'm used to the horrors of ALIEN, seen, like, a quadrillion times. Now, THE EXORCIST . . . that's a whole other ball game.