Ha, such a non-issue to us petty bean counting Germans, we always split the bill and it's only a problem like once a year with particularly stubborn wait staff.
Yes, maybe I'm generalizing a bit too much, but you're usually asked if the bill will be split if you're obviously looking like a couple. I'm leaning towards preferring that way. I've no problems buying friends a beer or two, but a) I don't want to be overthinking what I am gonna eat and drink if the bill will be split evenly (like in other countries) and b) sometimes there's really people I don't want to subsidize (e.g. coworkers instead of friends).