Share Your Favorite Linux Distros and Why You Love Them

So we can clearly see the most popular distros and the reasons why people use them, please follow this format:

• Write the name of the Linux distro as a first-level comment.
• Reply to that comment with each reason you like the distro as a separate answer.

For example:

• Distro (first-level comment)
  • Reason (one answer)
  • Other reason (a different answer)

We're looking to create a comprehensive list of the most popular Linux distributions and the reasons why people use them.