Could I be pansexual and aromantic?

...or is it normal to not want a relationship or even exclusivity with anybody, and get annoyed when they want more than sex...and to really want sex, but not the person attached to the body, except as a friend. Or have I just not met the right person?

I keep telling myself that I haven't accomplished enough in life, and that's why the idea of a permanent relationship seems so miserable to me...but honestly, if the idea of being in a relationship is a turn-off to me? An obligation?

...and I don't like being alone. People don't usually live with their friends past their 20s. I don't want to always be alone.