I've been a WordPress developer for quite a few years. It's just me, and I need tools and services that help me stay on top of my client sites without much fuss or cost. I used WordFence because it helped me update faster. When they started WordFence Central last year, I put all of my sites into that dashboard. Now, I have one place to check for updates and it makes maintaining sites easier. Their support team is amazing and they always make sure my questions are answered quickly and thoroughly. I don't install a WordPress site without installing WordFence, too.