so hung application produces pretty patterns on the screen when you try to drag your window, if you can even drag it at all.
This shows that people like you have last used Windows back in the XP or even ME days. Get with the times instead of wallowing in outdated criticisms.
You can't allocate a monitor connected to one host to become a part of the environment for other hosts, or combine multiple hosts with their monitors to show a single desktop, with applications spanning all of them.
.. management of resolutions on multiple screens, some virtual, some networked...
This is soooooo useful to so many desktop users compared to the use case of extending desktop to another monitor on the desk without fiddling with multiple config files and utilities. *snicker*
And no, your stupid Terminal Services don't count.
Yes, lets discount actual working remote desktop over even dialup,and lets trumpet outdated technology requiring a LAN.