The whole realism thing is a slippery slope ... it'll move on to the toppic of respawns, etc. I encourage everyone to play what they like as you'll likely find like-minded people to play with.
I've changed over the years ... starting out in Rainbow Six and Ghost Recon, there were no respawns, you die then you watch. We actually had some great conversations while dead and I learned a lot from watching better players, becoming someone who was being watched more than watching. But years of COD has changed me and I prefer to respawn and run around a lot more, mixing up some running and some camping. You never know, one day I may turn into one of these run-n-gun snipers, lol, ok maybe not.