If your just referring to movement you really don't gain much speed strafe jumping. Nothing gained in server 1. Very little in the mw beta. News flash the hit box is still the same to shoot someone! For people who are very aggressive jumping around a corner is very useful to shoot some squatting douche sitting in a corner or around a crate or something. If you disable jumping you slow the game down for a variety of reasons. If you want to see a slow example go to the esc server. It draws your gun when you jump. Which is fine and dandy except when you walk over a rock or crest a hill and it assumes your jumping and raises your gun as you get your ass shot off. If you want to see strafe jumping used to gain real speed play Quake Live. From the sounds of your post you would shrivel up, quit and play solitaire if you tried it. For anyone talking realism, you look like a cartoon character, can jump off multistory buildings, land into a dead sprint without breaking a sweat. Please go play something else for those wanting accurate realism.