Today touchscreens are now pretty much everywhere.
They help us interact with our computer more naturally with our fingers making them easier to use. After all, it is more natural to press the highlighted buttons on the computer. They also speed up tasks. You don't have to take their eyes off the screen and keyboard. This makes it faster to use.
I find the new models have one point: that it is no longer necessary to find vendor software to calibrate them. Today they now tend to use the native Windows utility; this was always a real headache. We had to keep a library of vendor disks in our software library in case some user had lost their driver disks and needed their monitors calibrated.
As Android moves more into Windows, we can expect to see the integration of touch screens into your computer increase.