Candle in the Wind

We’ve had light bulbs for well over a century.  So how is it that candles are still around?  In fact, how is it that there are whole stores devoted to selling candles, and that the industry generates over $2 billion a year?  It’s a great example of two ideas.  First, if you can find new uses for old technology, you can make a lot of money.  Second, if you can focus on the emotional rather than the practical (people don’t buy candles for practical reasons), you can sell more.  How does this apply to what you do?