What could I say to someone when they ask me "why do you meditate?"

I was talking to someone about my morning routine, which includes meditation. They asked me why do I do it. I didn't know what to say. Finally I said "you should find out yourself" with a smile. I don't know how to answer this question. I don't want to explain, don't want to preach and don't want to come off like I'm hiding something by not explaining myself. And it's rude to not answer the question. I felt what I said was not the right way to respond. Suggestions?