Personally and professionally I have seen my fair share of display connectors. At this point it has a Kafkaesque complexity. At the theory department we have computers ranging from around 2006 to current ones. This means that we also have all kinds of display connectors on the workstations and tablets:
I use an external screen with my laptop. Mostly because it is larger, but also because it has a sufficient height to reduce neck strain. There is another problem that causes strain: suboptimal brightness settings. On the laptop, I have brightness keys handy and can quickly use them to adjust the brightness. My Android devices regulate the brightness automatically for me. But on the desktop, the brightness is always fixed.