I don't really care about them, but this was one of the reasons that I've only played 'casual' modes on Beta and on CoD4 only a few times. As soon as I can I was always playing Hardcore. No more six million shot kills, no more running away with 50 pounds of bullets in you. One shots (well, maybe two), and you died. BAM. But I like it.

"Bolt Action rifles are one hit kills in every Call of Duty we (Infinity Ward) made!!"
Yeah, six or seven shots with the M40 and even the so-powerful R700 didn't killed ANYBODY without stopping power. Same with CoD2 with the Springfield.