Beer has been made for thousands of years, and up until prohibition in the US, it was just another part of keeping house. Almost everyone made beer or at least had a friend that did (possibly because it was safer than water in a lot of places).
We think you should brew because there's nothing better than inviting friends over, giving them a beer, and saying "I made this!" It's carbonated. It's alcohol. It's beer. And because you used fresh, whole ingredients and brewed it the way people have for centuries, it's really good beer.