You cannot judge a person by their star sign because there are so many variations in people's personalities.

Your question is not correct and could be interpreted two ways: "How do you feel about Libras?", meaning how do you feel about people with the astrological sign of Libra. or (less probable) "Do you feel like a Libra?", meaning do I feel the same way (emotionally) as a Libra. My answer to both is that somebody's astrological sign does not matter at all to me. I judge a person by his or her actions rather than the alignment of the stars when they were born.