What operating system do you have installed and why?

The choice of operating system depends on the tasks to be solved and personal preferences. For example, for Node.js development, Linux (Ubuntu, Debian) or macOS are often chosen because they provide a convenient environment for working with the command line, package managers, and development tools.

Linux:

• Free and open source
• Well-suited for servers and development
• Large community and many tools

macOS:

• Based on Unix, which is convenient for development
• Good integration with Apple hardware

Windows is also suitable, especially with Windows Subsystem for Linux (WSL), which allows running a Linux environment inside Windows.

Ultimately, the choice of OS depends on habits, project requirements, and available hardware.