How tall is too tall? Is it when you are over 6'4" and 6'5"?

Or are there no drawbacks to being too tall?

For discussion purposes:

• the average US white male is 5'10" (age 20-29, non-hispanic white)

• the average US white female is 5'5" (age 20-29, non-hispanic white)

• the average European male is 5'10.7" (age 20-30)

• the average European female is 5'5.5" (age 20-30)