People choose them because the big banks have historically offered a much larger range of financial services. Additionally, there are many people who still nee

People choose them because the big banks have historically offered a much larger range of financial services. Additionally, there are many people who still need to (or like) going to a bank in-person. The big banks offer many more branches than a smaller outfit will. Also, the flexibility they offer when traveling both nationally and internationally is typically much better compared to a regional bank or credit union.