whats in it for us.....?

Sometimes i wonder how two people fall for eachother ! what attracts two people..........is it the appearance or is it the personality or is it the person on the whole....? nothing practically tells us the reason to love and why one should do it..........the love for our fellow beings has an entirely different meaning....thats not what we feel for a guy/gal .......and besides what is it exactly that drives us so crazyyy...whats in it for us???? does it not leaves us exhausted from the complications....the secret meetings ...the never ending quench to chat along.....it is not such a big deal....we had and we will live even if we are left alone dats what life is about to move on....to find new dimensions and not to stick at a single place.....then is love stoping us from moving forward ?? i hope someday i will get the answers to my questions ....till then...move on and enjoy what life has for me....