Get new springs?

[Merick]

Should a fellow put new springs in a gun? I'm leaning towards yes on the grounds that the old ones are probably very old. However I doubt that luger springs are as critical as they are on a blowback gun like a PPK, but I really don't know.

Here are my thoughts (none or all of which may be correct)
get new springs because
-improve function?
-protect frame or other parts?
-old ones are from WWI??

put it off because
-old ones still work?
-original springs have collector value?
-cheaper to do nothing?

Somebody straiten me out.