Arch offers a combination of rolling software updates, a simple but easily customized base, pacman for the package manager, the AUR, a barebones installation process by default, good documentation, and active development. That may or may not be a good combination based on your goals.
Other distros offer a different combination of characteristics. Those characteristics are a starting point and you can get to the same destination no matter what you use. The trick is figuring out what starting point is closest to your destination or which starting point makes the journey fun for you. For some people, Arch is that. For plenty of people, Arch isn’t that.