[Harry Potter] How long does a wand last?

One of the options for students enrolling into Hogwarts, if they come from a wizarding family, is that they have the option of using a hand-me-down wand. But short of wands being damaged beyond repair, we don't see many people replacing them, even though it happens enough that hand-me-downs are a valid option for new students.

So how long does one last? Does a wizard normally use one wand in their lifetime, or is it the kind of thing where an old, worn-out wand is fine for schoolwork, but you'd need something newer/better for adult life?