[Not really racist!]

^ replenishing the cards is more of an "on the go" thing

i don't think people in a rush would wanna deal with walking a distance afar.
turnstiles are supposed to make things faster, more efficient, and safe.

and if you wanna bring up the "oh keep track of the $ on ur card" argument then, well, it happens
i only see small kisosk as the only solution.