I would like to choose people, but it's against my own personality. And what if I would choose wrong?
But getting 'what comes' is never a good idea. I think we always have rights to choose if we accept those who have chosen us. And sometimes it is nice idea, even for pure introverts, to suggest some people we like, that we are ready to be chosen. It's like @Mi Sha said, to choose people who (possibly) will choose us.