I call it Star Wars because that was the name of the movie for the first 20 years.
It was called “Star Wars” for only four years. “A New Hope” was added to the crawl in 1981.
It’s hard to say. Yes, “A New Hope” was added to the crawl in 1981, but that didn’t necessarily change the official title of the movie. All movie review publications I saw from back in the day (Leonard Maltin, Roger Ebert, etc…) listed it as just “Star Wars” well into the '90s. All pre-SE home video versions I have on VHS & Laserdisc just call it “Star Wars” on the front and on the spine… which includes the final Faces editions from 1995.
Unfortunately many modern databases refer to it as “A New Hope” though, which adds much confusion as to when the title officially changed, but I strongly feel that it became official with the first DVD releases. I wonder if the national film registry would have any kind of record of when the title changed? Not that I really care personally… I call it Star Wars, but I’m not offended with whatever anyone else wants to call it. 😃