There is no question that no matter how similar two people may be, the fact remains that they are still two different individuals. Everyone has different wants and needs, and to varying degrees. Ideas may differ greatly towards any number of topics, or situations, and how to handle them. But this does not mean that we cannot get along.
Some people like the simplest things in life. A nice restaurant with find food, a stereo playing all your favorite songs, or perhaps a relaxing day out shopping. Put it simply!
Other feels that obtain a huge amount of money is happiness. Money makes the world go around, so if you have got it, go and knock yourself on spending it. But in many of my friends' experiences, they found that in the end, all they had, was money and no one to spend it with. Most people wanted to know them for what they could get, in the way of designer clothes and expensive dinners.
I guess as the old what saying goes, money cannot buy happiness. How true is that? Getting married and having children is what most people strive towards, as well as assuming a successful career. But it is not for everyone. Many people prefer to remain single and concentrate almost whole-heartedly on their careers. The majority of marriages these days seem to breakdown after a short time.