There are great benefits to "double majoring." However, you should be sure that the degrees complement each . For instance, my son is interested in becoming a minister. He will major attend seminary school as well as major in Sociology, which will be beneficial as he travels to different countries and interact with different cultures as he conducts his ministry work. Another example is someone who wants to become a teacher in a school/district with an at-risk population. They might double major in education and social work or psychology.
Another reason to double major is to have a "back up" degree in case you do not enter your 1st field of choice.
Good luck to you. I hope this information was helpful.