The Rockerfly said:
1. Numbers don't come out of people when they are killed
2. You can't run as fast and as much as the characters on any of these games
3. When you reload your gun with maybe half the bullets in the magazine, that half magazine isn't remembered so when you reload you always have a full magazine
4. Health doesn't regenerate, if anything you should lose more health
5. If you're shot in arms or legs you will fall down or drop your gun, it's not a good thing to be shot there instead of body or head
6. You can't jump with that much equipment
7. You can't respawn in real life
1. nope, this is as you said for ease - though I don't like to see it either. I don't believe they're seen in the games I mentioned, and I'm not sure about hardcore mode either.
2. Oh yes you can. I criticised MW1 for being unrealistically slow, but usually games keep it to an ok level. The only gripe I would have in the MW2 "infinite run" ability paired with the "extra sprint one". THAT would be hard to keep up, and you'd be breathing too hard out of your hoop at the end of it to shoot accurately.
3.I had a discussion about this with my friend actually. Neither of us really like it, but it's a necessary gaming evil due to the speed of the game. I'm sure in a game like Deus Ex, rebombing magazines could work, but if no done right, could become very tedious.
4.Check out Call of C'thulhu Dark corners of the earth

. Yeah, I don't like the auto regenerate function, but am kind of glad for health not going down after you're shot in games, it makes it a hell of a lot easier - albeit unrealistic, but I think enough people have the common sense to agree to it being another necessary evil.
5.I can see where you're coming from, and I'd have to agree with you. I'd prefer for games to play on this a little bit more. It's a shame you can't hit somebody in the shoulder to make them drop their gun, but it would be counted as a "passive kill" ie: the person would be taken out of the game. In most games you can still kill people in these areas, so it's more of a case of games giving too much health to things rather than a headshot being a one-hit-kill.
6.Yes you can. Truuust me. It's difficult with an MG, and would probably be impossible with the 50 cal, but hey in MW2 people can run with the damn thing, so why not add one more level of unreality.
7.Yes, this would kind of be a game stopper. The best you can get I think is search and destroy, and as you've seen, it's not the most fun mode of play. In singleplayer however, I think it works pretty well

.
Now I'd like to rant on about how the length of the gun would affect what cover you can hide behind, and the range of different type bullets, but game developers won't take one look at any of my arguments, and I have to settle for not buying games I think are really badly made - in this example MW2 (for me at least) is the opitomy of a kiddy unrealistic shooting game, and has been made exclusively for such an audience and even surpasses halo3 in the lets-repeat-everything-and-make-it-even-easier-for-randomers-to-kill-without-any-real-skill-while-on-the-other-hand-making-normal-kills-impossible.
One last gripe: Snipers are really fing expencive, and propelled grenades (noobtube shot) are practically impossible to get a hold of in real life - even for spec ops.