It is easy to replace the door handles when these get outdated, lack the grip or the mechanism becomes dysfunctional. If the doors are to be used by those that do not have much grip, then the same may become complicated and difficult to operate. To avoid such a situation, it is easy to replace these.
It is also seen that, like all other stuff, the doorknobs undergo wear and tear. The most common mechanism is the failure of the spring inside the mechanism. When the spring fails, it is best to use a strike plate and keep the same closed.