Uh..since when does a WP have a time limit?
I even went and checked what you just said.
[2009-11-10 16:58:10 - Alpha 9]
Credit and Wishpoint codes do not have endless valability. You should use them eventualy or they might get used by someone else. Imagine i have like a pool of codes i give out from, if they do not get used they will eventualy popup in my list and they will be given to someone else. I am talking about a validity of a few days to a few weeks, but not endless. Once activated, wishpoint codes will enable you to reward that amount of wishpoints indefenetly, but as a code, they should not be kept for too long. As an example, i am not starting to reuse codes not activated during the festival.
Essentially, the WP code expires. Once you used it the WPs on your account don't- simply because giving a WP because "I had no other reason as to why I should award someone" was to be prevented.
Yes, yours to give away..but not simply because you had nobody else to give it to.