You may think being the last one out of your friend group to turn twenty-one is the worst thing in the world, but in all honesty, it doesn't have to be. One of the biggest perks is that everyone of your friends can go out to the bars with you on your birthday. All the people who turn twenty-one first have to wait for people to be able to go out with them, but you get to celebrate your birthday with all of your friends.
Another huge reason you should feel okay with being last to turn twenty-one is thinking about all the money you are saving. The bars are expensive. When you don't go to the bars you are saving so much money because an average bar drink is about seven dollars. This being said seven dollars multiple times a night, multiple nights a week really adds up, so you are going to have to budget your money better.
You don't have to be the one to buy alcohol for everyone else. Having a ton of people ask you to buy them alcohol must get annoying at a point, and if you're the youngest out of your friends, no one will be asking you to do liquor store runs for them because they can all go already for themselves.
The biggest reason is that you can enjoy being young. You should still continue to enjoy going to house parties and just being able to hang out with friends without having to go to the bars. Spend these months before you turn twenty-one just being able to enjoy life without feeling obligated to go out to the bars all the time. You have a great excuse when you don't want to drink on a weekday to just stay in. This being said it will be your turn to turn twenty-one soon.