One thing is, since they lowered the voting age, we must take this for granted. What I mean is that if you have the privilege to vote, then do so. It is your responsibility as an American citizen to choose who you want, and trust to control our country. Voting isn't something you just say, “Oh, whoops, forgot to vote today… Eh, I’ll just do it next time.”
You could do that, but if you did,