Strafing is fine as long as everyone can do it the same. If someone has an unfair advantage, then they should remove it, but that's the case with most things, sooo... Working as intended.

2. There is no "abuse" happening. I'm simply baffled you would call using simple movement mechnaics in a game as "abuse". Someone going left when you thought they'd go right is not them abusing anything, it's them outplaying you. You're trying to say someone using their joystick or pressing A/D is "abusing" their ability to not die to some scrub who can't aim.

Abuse Noun
use (something) to bad effect or for a bad purpose; misuse

"Chop-Strafing" specifically takes advantage of the Asynchronous update between a player model and it's associated hitbox, unless the update of a player's state across all mediums is instantaneous the "tactic" of chop-strafing causes a plauers hitbox to fall out of synch with their actual posistion, your bullets impact your target but do no damage. Is this skillful?

3. Inertia is a thing, yes, but it absolutely does make sense to be able to move left then right at the speeds we're moving at. These aren't cars going 80 miles per hour trying to suddenly stop, these are humans moving at human speeds. Try it, get up off your couch and strafe left then strafe right. Do you feel the inertia? Hardly.

So you sidestep at a speed of 8Mph? Faster than your briskest walk and you can stop dead in less than 10cm? A better example would be to power walk in one direction, then without taking an extended step or planting your leg to get better grip, move in the opposite direction, you'll end up face first on the floor.

There is no defying physics. Stop making sh-t up to try to prove an awful point. Strafing has been a staple in every FPS since the dawn of time, but in this game because the skill disparity is so high people will come on the forums and cry about damn near anything to try and get their way.

Yes strafing is indeed a stable of all FPS's, here look at this link http://en.m.wikipedia.org/wiki/Strafing_(gaming) which refers to strafing as continous movememt oft in one direction, or as means of locmotion. As for the defying physics, actually there is a huge error, no acceleration or retardation, which simply isn't possible in our universe.