We'll just agree to disagree. God willing, if and when I get to that level, you won't be seeing me retiring unless it is a freak Hamburg 2007-like injury.
What does it matter if it is a freak injury or not? You have no way of knowing just how painful it was for Murray. Maybe it got significantly worse suddenly, we don't know. Now, I hate Murray and think that he does fake a lot that he is in pain, but he is not the kind of guy who retires from matches when faced with little pain. So for him to retire it means there had to be a good reason for it. We have to remember that he is an athlete for whom a Grand Slam tournament is starting in 1 week. This is not two guys playing eachother who are ranked 663400 in the world, he has worked his whole life for this. There is no reason to be stupid about playing on when you can get injured even worse and cant move.
How many times could Backerer have retired? How many times (more) could Kneedal have retired? What about USO 2009 SF vs. JMDP when Nadal clearly had an abdominal injury? He played through it. Or AO 2011 vs. Ferrer? Or a multitude of times where Fed or Nadal was clearly struggling with injury, but they got through it. Year End 2008 vs. Murray? IW 2013 QF?
How many more times could Murray have retired from a match? Last year against Nieminen at RG? He was in a lot of pain there, but carried on. Is murray the kind of guy who has often retired from matches? He isn't, he has only retired once before. Compare that to Nadal. Despite all his faults and the fact that he is a bit of a prick, he is not a quitter and I consider him a fighter on court. So when he retires, you can be sure it was for a reason.