Nothing about being "worth" it if you ask me. It's about collecting the money (and not getting layed off coz you're the guy that makes the most). This will depend on the company. Some companies do stack ranking and you can tell me whatever you want but I bet being at the top of your salary bracket gets you out more easily. But if you have a company that values you, doesn't do that sort of stack ranking and you're fine with only getting the standard inflationary increase, then collecting the extra money for multiple years is worth it if you ask me.

That said it feels kinda nice if the company gives you a raise without you even asking but it does mean you were basically underpayed vs. what you might have gotten.