Ping, calaway etc. Thanks!
A quality set of golf clubs , both irons and woods under normal use should last a player 30 to 40 years. The wedges and scoring irons like the 7,8,9 and PW might require groove sharpening but the playability , otherwise , is not effected. The majority of new club purchases are by those who are looking for the set of " magic wands" which are " game improvement " clubs . Another reason is having youngsters who become interested in the game who need clubs. They inherit mother or dad’s clubs who then buy the new sticks.