Someone downvoted three of my answers to own questions in a row.

These are the answers:

http://askubuntu.com/a/757829/428857

http://askubuntu.com/a/854620/428857

http://askubuntu.com/a/791221/428857

For me it feels unfair. I am a Linux beginner and it was an effort to find the solutions and I wanted to share them.

Why the downvotes? Is it considered bad practice to write answers to (unanswered) own questions?

Someone downvoted three of my answers to own questions in a row.

These are the answers:

https://askubuntu.com/a/757829/428857

https://askubuntu.com/a/854620/428857

https://askubuntu.com/a/791221/428857

For me it feels unfair. I am a Linux beginner and it was an effort to find the solutions and I wanted to share them.

Why the downvotes? Is it considered bad practice to write answers to (unanswered) own questions?