Hi Keith,
It's a really good question, the answer is a little harder....................................
Of course we are all different not just in height but some have short arms, long arms short and long legs etc not just height, "THEY" say that the average guy is around 5ft 10 inches....................and a standard set should be ok..........bull' not only are we all built different but we stand and swing different, moving an inch further from the ball changes the lie angle, the speed we swing changes the lie angle as the shaft bends more.
The truth is there is no standard set only standard people who are silly enough to fall for sales talk when begining to play the game, however one of these set should be ok to start the game with and engrain the fundiments of the game, ruin them with miss hits etc then get rid.
Once you reach a reasonable standard with a repeatable swing then you need a proper fitting, the shafts are pretty standard for all but the very expert, a standard regular for swing speeds upto around 90 mph and stiff for over 90mph. Lofts and lies need setting and your shaft length depends on you and your build. My
clubs are 1/4 inch shorter than standard, I'm 5ft 8 inchs.
The simple answer is most people don't join GTO and get as much information as possible about the game and use all this knowledge to better their game.
This is now as clear as mud right.
Ian.