Scooby-Doo would a word with you…he just enjoyed some things in the past that are now legal in most U.S. states. That doesn’t make him, or his relatives “disgusting”!
Humans stink, drool, and take horse sized shits, too. Great Danes are more loyal and friendly, though. I mean I understand not wanting to home one, but hating them for existing seems weird.
First thing you want to teach Great Dane is not to jump on you. They are big and heavy dogs who don’t realize they are big and heavy. Add playfulness to that and it’s a recipe for hurt.