Do you use UML diagrams in OOP?

Question

OOP

The question is probably mainly for those who work in companies. Is UML still in use? Where is it applied? In the documentation for the project, in the technical specifications? Are they generally comfortable to use?

Answer 1

The ToR uses some types of diagrams (activity diagrams and case diagrams).
The rest were never useful in practice and were not applied.

Answer 2

no one is using it. all these diagrams are for tutorials, not for real problems.
in reality, the code changes every day, who will monitor and make changes to the UML?