In 25+ years of flying, I have had this occur - maybe 3 or 4 times. An aborted landing is much better than the possible alternative, trust me. I would say this occurs somewhere in the world almost daily basis, and is an indication that either the pilot felt the landing would not be safe, or the ATC was trying to get better spacing between landing aircraft, or the Runway wasn't cleared soon enough to aircraft next in line to land safely. It is actually a good indication that system is working to ensure your safety.