I fully agree with you, man. Although it's important to plan ahead, enjoy your youth for the fleeting time that you have it, and don't let others overwhelm you with worries. This should be one of the best times of your life.
BTW, you don't have to make these decisions in your senior year. Many teens find that when graduation comes, they're willing to get a job for a year or two while they decide what they want to do next.
Right now, it's summer...enjoy that, and make the decisions as they come to you. No need to hurry anything.
Cheers,