Lower interest rates make dividend stocks more desirable.The Federal Reserve lowered interest rates last week and could further cut rates in the coming months. Lower interest rates lower the cost of capital and can increase the return on investment for capital-intensive projects.Here's how the Fed's move can benefit energy pipeline company Kinder Morgan (KMI 0.51%) and why the high-yield dividend stock is worth buying now. Room for further balance-sheet improvementsSince the oil and gas downturn of 2014 and ...