Bratwurst with mustard is pretty tasty. You can also eat that with a bun. It´s not that surprising that I as a German do eat Bratwurst very often. I think that is a broad statement that really fits to us Germans.
I wouldn´t say that we eat it every day but once in a week could fit. We have so many different kind of sausages here. Yes, there is a huge assortment. The Bratwurst on the image above is a bigger one and very tasty.