Patrick J. Endres/Corbis Documentary via Getty Images For investors that want attractive yield, some of the best opportunities can be found in the energy market. Although the energy market is typically associated with extreme amounts of volatility because of price fluctuations, one segment of the space that does very well over the long run is the pipeline/midstream market. A great example of an attractive prospect in this space is Enterprise Products Partners (NYSE:EPD), a massive player with a market capit ...