My life would be quite different, I'm sure.
I probably would never have met most of my sorority sisters, or if I had met them, we'd be no more than casual acquaintances.
One of my best friends is my sister. Who knows if I would have met her?
That sister introduced me to my husband, as well as to my psycho ex-boyfriend (you win some, you lose some). Who knows if I'd have met either of them? (Of course, in the case of PsychoEx, that would have been a good!

)
I'm not a very outgoing or chatty person, but the experience of participating in rush from the sisters' side has helped me develop the ability to strike up a conversation with a total stranger.