Why are people fooling themselves?

I believed that pac had a chance of winning yet he was thoroughly outpointed by mayweather. He won some rounds clearly but didn't do enough to win. Why can't people just move on and accept the loss. People who say pac won and that it was close ignore that all the commentators, even jim lampley, were saying that mayweather won decisively. Tons of fighters who fought both men favoured mayweather. If manny had a shoulder injury that was as bad as people were claiming then it sure didn't look like it when we saw him in training the week before or even when he was hitting the mitts in the dressing room before the fight. Pacquiao was unable to cut off the ring and it really showed. As well as this there were moments when mayweather was right in front of him and he still couldn't do anything due to Floyd's jab and straight right. There were also times where floyd was backing up pac with his jab. As a person I despise floyd but I can't deny that this was a real shutdown. Floyd threw more combinations than pac most of the time and although pac got some good combinations in at points it didn't seem to cause much trouble. Going into this we heard nothing other than how pacquiao was going to "murder" floyd and how his fast feet were going to cause problems. Now people are saying pac was shot, the same people who said he hadn't lost any speed when they saw him outpointed bradley last year. The same people who also said mayweather was shot after the maidana fight. I just can't believe all the bs excuses that are coming out now. It's best if people just accept what happened and move on.