It's a central mechanic to the gameplay, not really optional.
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never said it was optional, just that I believe it is too small to impact your decision for the game, and honestly, I'm getting a little tired of watching this dude post the same post about ADS, I get it, he doesn't like it
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Understandable, though I can also understand being skeptical about a game based on a core mechanic. Just not necessarily [I]why[/I] he's skeptical. ADS, despite being core, isn't too big of a deal on its own. It at least isn't very dissimilar to Halo's zoom function. Serves the same purpose.