Sofia
Such a great question.
It depends on the neighborhood and style of your home. In a traditional home in a traditional neighborhood, chair rail is common. Even some modern designs have chair rail. We just finished a home that one would call country chic which is a transitional look and we utilized lots of chair rail but with a modern flair. If you like the chair rail, find a way to work with it and if you are uncomfortable by it, then it must go. Good luck with your project.
Sincerely
Michael Bickoff
President
The Accessibility Solutions Group, Inc
Lake worth, Florida