Teen Dateing

For me as a high schooler I take school pretty seriously. I work hard so I may have a better future for myself. For many teens, high school is a time for self discovery and transformation. A time for learning how to become an adult. The four years I'm in high school will set the course of the rest of my life. This makes me wonder why so many teens focus on dating and serious relationships during high school. In my opinion, I believe the purpose of dating is to find who you want to be with for the rest of your life. Most relationships in high school will never work out. I see relationships start and end within a week, cause drama and heartbreak. Even if the relationship gets through four years of high school I don't think it will last over college. I feel it is o.k to be best friends with somebody with the opposite sex or ask them to a dance, but dating in high school should not the top priority or focus of a teen. My question is why do young teens date at a stage in their life where finding a partner isn't all that relevant?