Why did you get into Product Design?

I mean seriously every person who is ask this question says, I am really passionate about design, and solving problems, but are you really passionate? Have you ever sat down asked your self this question? So recently I was giving an interview and the person asked what made me get into UX Design and I answered the with the same line, and the expression that person gave me really made me question, whether am I really passionate about UX Design. Please think before when you say this in an interview.