With a limited number of rounds to play, it is important that you maintain your clubs in order for them not to break on the course. In general, most golfers will need new irons every 3-5 years or 300 round replacements depending on how often they use their current model clubhead and condition. Maintaining proper equipment can help players avoid costly repairs whenever possible.
It is important to know when your golf clubs need a replacement. The first factor that determines this is clubwear, as you don't want to continue using an old and worn-out set of clubs do you? Another thing which could cause the frequency in replacing them would be technological advancement; for example, if someone else has titanium shafts while we prefer persimmon ones it can be embarrassing at times since they hit so much better than our wooden types.
If you've ever wondered if it's time to replace your old clubs, the answer could depend on what they mean for you. If a club means something special or brings out confidence in playing well (e.g., my favorite), then consider how much wear has been put into them and whether fixing would bring back joy instead of just being economical with repair costs; however, if there isn't anything about these particular pieces from which we get excited while hitting shots... maybe holding onto them past their life expectancy doesn’t make sense any longer? Give yourself peace of mind before deciding whether investing more cash into repairing rather than purchasing new can provide adequate solutions when buying equipment.
Club and wedge replacement is a personal decision. Many players have favorite clubs; they may even be the same club you were handed down from your family years ago. You know how much meaning that particular set can carry for people, but other factors need to come into play too before deciding what's best in this case.