Hi Jorge,
That's an excellent question, and the subject of a great deal of speculation lately. As Gutenberg continues to evolve and mature, many people have asked whether there is still a need for drag-and-drop page builder plugins at all.
Our friends at Beaver Builder wrote an article outlining the differences between Gutenberg and page builders.
You might also take a look at this article, which outlines 7 key differences between Gutenberg and WordPress page builder plugins.
One important consideration is whether you're comfortable sticking with a particular page builder for a nice, long time. I hear from people all the time who built their site with Beaver Builder, Divi, or Elementor, and then decide they want to return to the native WordPress (Gutenberg) experience. But there is no easy way to convert content from a page builder to Gutenberg. You'll often it's easier to simply recreate those pages from scratch, and that can be a very tedious process.
You'll also want to consider page speed when choosing between the native Gutenberg editor in WordPress or a third-party page builder plugin. A quick Google search will turn up numerous articles like this one that claim Gutenberg is much faster than page builder plugins. And that can be an important consideration, since page load times have a direct impact on your search engine rankings. If your site loads slowly, it'll show up lower in Google than a comparable site that loads faster.
We love Beaver Builder, and many WordPress professionals use it to build sites for their clients. The same can be said for Elementor and Divi. But as Gutenberg continues to evolve, you may find that you simply don't need the more robust features provided by a page builder.
For that reason, I'd recommend starting with Gutenberg... then only use a third-party page builder plugin if you find that you can't build the site you're trying to build with native WordPress blocks.
Even then, you may simply install a plugin that adds more blocks, rather than a full page-builder plugin.
Hope this helps!