How Important Is Home-Field Advantage in the NFL?

[Jasmine]

Playing in front of familiar fans can provide an emotional boost, while travel and stadium conditions may affect visiting teams. Some venues are particularly difficult for opponents. How significant is home-field advantage in modern NFL football, and what factors make certain stadiums harder to play in?

[kangroo]

home-field advantage still matters, though maybe not as much as it once did. Crowd noise, travel, weather, familiarity with the field, and communication can all affect visiting teams. Loud stadiums can especially make life difficult for quarterbacks trying to make pre-snap adjustments. Which stadium gives visitors the toughest environment?