I say, yes, keep them if you can. Someday they may be important or even worth something to someone. Don't spend a lot of time or money, but if you can keep them, they are priceless impressions of history.
(I am a history freak, but that doesn't mean you can't be too)
With the digital age, it seems less important, as you can have copies of your photos saved on an image hosting site, but in the past, they were used to reprint photos that were damaged or lost.
only if you want them, say if they were important photos you could store them in a nice box, otherwise you dont really need them
Oh, at the very least, ask anyone who might have an interest in them if they want them. Don't just throw them away.
Thanks...this really helped my mum :P lol