Ironically, if you drink alcohol in the United States, you're essentially forced to carry your ID at all times because bars and restaurants check ID aggressivel

Ironically, if you drink alcohol in the United States, you're essentially forced to carry your ID at all times because bars and restaurants check ID aggressively (even for people who are visibly much older than the legal drinking age). So even though, as an American, I'm not required to carry my driver's license around at all times, I almost always do, and many of the few times I've left it at home I ended up regretting doing so. Based on my visits to Europe I'd imagine Germans would find this whole situation ridiculous.