Because it's unnecessary. Further risks the health of teams' best players. Diminishes the overall talent of the league as 18 games means more roster spots on the gameday rosters and the practice squads (due to teams being more hesitant to IR a player with more weeks to get them back). I understand the arguments against it, but do any of them stack up against that there will be 2 more weeks of football? I guess if somebody cared a ton about the playoffs and much less about the regular season than an 18 game season would be a bad idea. For me, having 2 more Sundays worth of football is wonderful. And I don't think the talent level will drop that much. There will be more players injured but there will be more time for star players to come back from injuries as well without getting IR'd (especially if there are more roster spots). couldn't they add a 2nd bye week and extend the schedule to 18 weeks? that way we get more weeks of football (with healthier players) and the players still play 16 games. They did that in the early 90s.