Why is Not Wanting to Leave My Home Town a Bad Thing?

I am asking this question because I struggle to understand why staying in my hometown is a bad thing. Holding everything else, I'd rather stay in Silicon Valley than experience growth from leaving my hometown.

Sunnyvale: Hometown I Lived for Over 10 years
Sunnyvale: Hometown I Lived for Over 10 years
Why is Not Wanting to Leave My Home Town a Bad Thing?
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