Pretty sure none of my 20 something year old kids have ever been to a cash machine. Or ever really used cash. Not sure they know how to write a check, for that matter. 
Levity aside, great suggestions for safety on this thread. Especially in cities that are new to them, mine are hyper vigilant. My son travels frequently alone and will Uber if the environment looks “sketchy” as he calls it. In some cities neighborhoods can change quickly en route.