There are a lot of common methods of printing, but offset lithography is still one of the most common ways. One advantage of offset vs digital printing is that the ink level can be adjusted on an offest printer with a screw key. That being said, digital printing is usually what quick printing services use, because it has less turnaround time.
In the 1980s, the development of graphic design programs like PageMaker and Adobe InDesign made it possible for people who were not professionals to make professional looking items and this made life much easier for people who wanted to make brochures or advertising pieces to introduce a company or organization to a target audience.
This is called promotional printing. People still make brochures, and it is for this reason that people will probably continue to use graphic design programs as they make brochures. It is uncertain whether or not this will last, but for the moment graphic design is becoming much more populist, which is to say that just about anyone can create some sort of special effect on their computer, whether it is printing an image of them holding a fireball or otherwise.
To make brochures has never been easier, especially with the development of digital printing which can turn products out quickly. And people will probably continue to use these products. It is for this reason that more people are finding new and creative ways to build their pages.