It was a great show with interesting storylines until Doogie became a snotty "bachelor" sometime in S3 and all of the female characters apart from the main cast were women he was in relationships with. It got old real fast; at one point a young girl has a crush on him and he arranges a date just to appease her. It's not inappropriate per se, but there was no need for the show to go in this rom-com direction as much as it did.