I don't wanna date, is that normal? ?

I'm a 15 year old girl and I'm a junior in high school. I'm totally straight. I've had a few relationships before but nothing too serious. I'm a teenage girl so of course I love the attention of boys but when it comes right down to it, I don't want to deal with them. I just don't want to spend my time making somebody else happy when I could be focusing on things in my life and focusing on going to college and doing great things. (Btw I'm NOT promiscuous at all!) I don't even plan on getting married. I want kids, so I plan to adopt. Does anybody else feel this way?!