I too am entering my 14th year on Lipitor. I have my liver panel done twice a year, and it shows no problems at all. Also I have no muscle problems at all. I retired 5 years ago and exercise more now than when I was working. I feel that I am stronger now than back when I retired, with no pain at all.
It is apparent that statins do not affect me at all, yet my wife cant tolerate them. On statins her liver readings go nuts.