McDonald's may not be the trendiest fast food chain out there, but they have remained one of the most popular in the world for decades, and there are a lot of reasons for this. Sure, kids love the Happy Meals, and everyone loves the fries, but their delicious burgers are really what keep people coming back. McDonald's has made some noticeable changes to their hamburgers over the years, and their quarter pounders are now made with fresh beef, but that's not the only thing that makes them great. Let's take a look at some reasons why McDonald's burgers are so delicious.