For a standard home or development desktop, it's really not an issue or a choice. Linux is the best.
Like others noted in this thread, if video editing is needed, you likely have a Mac or Windows installed.
For work, it's Outlook. It's the killer app at work for those places Exchange is the standard.
If you don't buy a laptop from System76, you are in for a surprise. Out of the box, synaptic touchpads and separated graphics cards really don't work at all. The touchpad is way too fickle and battery life is awful using the more powerful GPU by default. Configuring or switching the GPU is extremely painful (restart X server!?). On Windows, it's seamless.