Bungie does a fine job with aim assisting in Halo and in Destiny. It's also experience from Halo games. Bungie did a fantastic job in making Sniper Rifles work beautifully. Sure the aim assist is there, but you still need to [i]be[/i] good to do good. As a competitive Team Fortress 2 player that off-classes Sniper, I know that when I snipe, I twitch shot. I think a lot of players do that as well. not necessarily quick-scoping, but never hesitating to take any shot they can. The worst that can happen is that you miss. And if you don't take a shot, that's a 100% chance of you not killing your target, as opposed to taking the shot and having a lesser chance at it. If you want to avoid getting Headshot often, do what competitive Halo players do: Aim down when you're jumping. This lowers your Guardian's head's hitbox so that it's harder for them to snipe.