What is your biggest weakness?

What is it with people who ask this question 'What's your biggest weakness?' 

Humans are not really aware of their weakness. If we knew, we would have worked on improving it. If we don't, we can't answer that question. 

Also, there is nothing like a real weakness, the only REAL thing is attitude. That attitude can be a weakness or a strength depending on how we mould it for the right job. 

I have always observed & believed that our biggest weaknesses can also be our strengths if we harness them. It just boils down to attitude.

A knife can kill in a murderer's hands, a knife can heal in a surgeon's hands. Our attitude decides if we want to be the murderer or surgeon. 

I am an anxious kind of person, my anxiety motivates me to recheck all my work & practice meticulous care at task on hand. Now that is a strength for handling any potential situation. My boss in office was always able to trust me because of my attitude.

However, someone's anxiety may make them mess up & waste precious time in working slowly due to their mind being clouded by fear. Now that is a weakness!

If you rule your attitude, it's a strength. If the attitude rules you, it's your weakness. 

Honestly, this must be a popular interview question because the interviewer needs something to talk about, not because it is a good question worth asking :)