Yes, zombies have most certainly been overdone. There are many other facets of horror that could provide hours of entertainment. Since they first appeared on the screen in the 1930s, there has been a stream of “new” zombie media being released. While the demand for zombie related horror died down for several years, it has since resurfaced. Currently, the trend is zombie-ism. There are television shows and movies still being created and produced that are all about zombies. The problem with zombies is that there are only so many ways that you can remake them. There are no fresh ideas out there.
Instead of creating a new horror, we are falling back on the “tried and true” of what has worked in the past. Remakes of classic horror movies do not always do the movie justice, and many walk away dissatisfied with the content they just viewed. The zombie fascination does not look like it will end soon, although it does seem to be slowing down just a little bit.