Older desks — mine included — make uncomfortable computer stations. With a few quick changes, though, many desks can turn into customized pieces that are much more comfortable to work on. All you need is a saw, a drill, and a few pieces from the hardware store.
I have an ancient institutional desk — the sort of thing you’d find in a low-rent office in 1965. It’s solid like a Ukraine bull, and it matches my décor, but it’s been awful to use as a computer station. The desktop is uncomfortably high for a keyboard or mouse, and I’d rather sit farther back from the screen, too. In the end, I turned the widest drawer into a keyboard tray and the topmost remaining drawer into a mouse surface (they’re at similar heights, which is much better ergonomics than the desk provided before).