Apart from being physically attracted to taller women because of their looks and guys personal preferences, most guys who like tall girls do so because they are tall as well. They find it physically easier to be in a relationship with women who are the same height as them or slightly shorter.

Why are women attracted to tall people?

The idea, from evolutionary psychology, is this: Modern women tend to have genes that propel them, consciously or not, to favor tall men. That occurs because women in the past who had this preference tended more than other women to produce children who survived to reproduce.