I own two coupes, a 2dr pickup, and four four door cars.
Sedans can look really good, but IMO coupes are more likely to look good. I'm not a fan of hatchback lines in terms of beauty, but they are just plain downright practical, regardless of door numbers or cargo space.
Sedans are just more utilitarian. One of the cars I own I have both the coupe and sedan version. The sedan has more utility in every way.
If I needed a small car or one car, I see no reason to have a 2dr, regardless of body style. They don't seem (us market at least) to be shorter or run with lower displacement engines, which tend to be the basis for taxation elsewhere. They are variants of the same platform.
So the one reason to buy a coupe/2dr is looks, IMO. Maybe performance depending upon model, but for my purposes here, capable sports cars are separate, purpose-built platforms/machines usually.