Games are going way too long for no reason

Almost every game I have had since Cinderhulk release, games have been at least 40+ minutes. Despite teams being ahead, even by a large amount, they still don't end the game, they just keep farming and waiting and getting dragons. Its almost like to win the game you need at least 3-4 possibly even 5 dragons before the game can end. I have had numerous games, where my team is around 15K gold ahead of the other team, and the team still won't end? The game just sheepishly extends way longer than it needs to. It is almost like we are scared to end because we don't know how strong we are until we get dragon or baron to push lanes. I think to win the game you are forced to get dragon and baron, so its good we have people going for objectives (especially junglers with the diversity), but it's making games go way longer than they need to go. It is pretty weird if you ask me. Anyone else experiencing this?