There are some drawbacks to using a touchscreen monitor. For example, holding your arm up to interact with a touchscreen throughout a day’s worth of work will get tiring no matter how strong you are. And, you’ll have to clean that screen regularly. Otherwise, that buildup of smudges and fingerprints can get in the way of seeing it properly.
You’re also limited in how big a screen you can get since you’ll need it to be within arm’s length to use that touch capability.
Most importantly, however, touchscreen displays are more likely to experience some kind of damage. This is because there’s much more going on under the hood than with non-touch monitors. And, when something goes wrong, it will cost more to fix due to the more complicated design of these panels.