Every developer should be forced to tech support at some point. And additionally sales calls. While I really hated doing the latter it gave me some appreciation

Every developer should be forced to tech support at some point. And additionally sales calls. While I really hated doing the latter it gave me some appreciation to what they have to do. Customer support gives you insight into how your actual customer used your service and their pain points. It's incredibly valuable as developer to see that point of view directly.