Anime ending

Most of the anime didn't have good ending isn't it. Like for example Ranma, they didn't make the ending that Ranma not turn into a girl anymore. Dragon Ball GT the ending only show Pan became grandmother and have grandson named Goku but didn't mention who's her husband and children at all. I hope they're making good ending for all new anime from now on and they should. I expecting good ending for Detective Conan and One Piece and I hope it's come true.