Over 34 years since its release, Michael Keaton's Batman movies still hold up for a variety of reasons. The Batman franchise is WB and DC Comics’ most mainstream and profitable property, with Batman himself being perhaps the most malleable superhero in the genre, making his films an exciting opportunity for any filmmaker to create their own unique interpretation of the mythos. Tim Burton and Michael Keaton’s iteration of Batman has had many successors over the years, but theirs continues to endure the test of time.

https://screenrant.com/batman-movies-1989-returns-michael-keaton-good-years-later/