Argumentative- voting ages

My argument is that voting ages should be higher. At the voting age right now, which is age 18, you would still be in school when you are allowed to vote. Should people who are still learning in school have the right to pick the president of the United States? Students have not learned all they can learn when they’re still in school, so they might make a bad choice about their vote. Also, people at age 18 aren’t allowed to do everything older adults can, so, should they be able to make such an important decision? And, most kids at age 18 would be in college so, they wouldn’t have time to actuall think about the important choice and just choose the first thing they think of. If the voting ages were higher, more mature people would be making the important choices in the world.