Because the running game is actually far important in football than the passing game. If you can't run, or, more to the point, if your offensive line can't run block, you're toast. Your only other option is the pass, and the defense knows it. Worse yet, coaches have begun realizing what I knew all along: a team that blitzes on every other down can be beaten soundly with lots of screen passes (itself really more of a run, since the ball is thrown to a receiver behind the line and you can block down field,) but a really first class secondary means your quarterback throws more TDs to them than to you.
So how do you beat a good defensive secondary? The same way you beat any team: with a good running game. An incomplete pass forces a stoppage of the clock, because the refs need time to respot the ball, so it's not a good way to ice a win; further, I've never heard of an "incomplete run" and fumbles are less common than interceptions. Until recently, few good teams threw more than they ran, and the balance of them still don't. A team that passes on every down is akin to a team that starts the game with an onside kick: they don't have a prayer, and they know it. Put it this way: I've seen more teams win games with a kneel down than with a hail Mary.
And association football is not football, that's why we call it soccer. :elfroleeyes: It does furnish some good kickers, and the Chargers had an ex-rugby player as a punter a few years back, a good punter at that. I could give you an extended discussion of Why I Love Football, and even explain the rules pretty well so you'd be left going "Oh" but I think the mods would have a conniption fit. Suffice it to say we don't do it the rugby way becuase folks were getting hurt -- badly and TR threatened to end the game forever, so now you have to have seven men on the offensive line, with only the two on either end able to catch passes. You also can't watch a guy go out for a pass and take his knees out while he's watching the ball, not you. You can't have your guard block a nose tackle high (stand him up) while your center takes his knees out because you only have two knees and one spine; when they're gone, they're gone. If you really wanna WHY and HOW it all makes sense Google the NFLs online rulebook, or have them send you a complete one for this season (three more weeks, just three more weeks.)
Why would I want to play a game with the pace of basketball on a football field? or
How many times can you sprint a hundred (or hundred and ten) yards in an hour without dying?