Don't get me wrong, lobs are easy to hit, and like you said, relatively easy to put away if you just hold off pressing the button until its rising up. Although as coke said, I like an opponent trying to outsmart me with passing me or vice versa, and then after a few failed attempts and exchanges then hitting a lob...just a personal preference I suppose.
The best lob is when i hit a drop shot near the net for example, then my opponent manages to not only get to the net but then hits a lob and I can only watch it soar over my head saying too good!