Like all of us, they have a set number of clubs to fill the range from (for them) 300yds down to zero yds, they have dreamy short games with a 58 or 60 - the 64 would be too limiting for them. I also think Phil likes to be a bit out of the ordinary, the 64, Frankenwood, two drivers etc......
I think you judge the club by the inadequacies in your own technique - not everyone is the same.
I wouldn't have one though 
