Public Bathroom sinks

You know what I hate? Public Bathrooms at restaurants or the like, where if you try to wash your hands they have either motion sensors or that faucet that you push to get 5 seconds of water out of. Why the hell can't they make it so that the water flows for at least 15 seconds? Is that so goddamn hard? I'm not eating at your restaurant if your sink to wash my hands and ensure cleanliness infuriates me.