Why is walking a daughter down the aisle a father's dream?

Even my father once spoke about how I'll grow up one day and he'll walk me down the aisle. I was then 10 years old; now I'm 16. So is a woman's happiness as an adult only base on finding a man and getting married?

How about growing up, staying single and becoming a wealthy businesswoman or being a great athlete? Why can't that be a father's dream too? Why walking a daughter down the aisle?

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Why does a father focus on that moment instead of other moment? Being the owner of a large corporation can be a great moment too.
Why is walking a daughter down the aisle a father's dream?
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