You do realize that Judas was the bad guy in that story right? Not that lots of christians don't adopt the same pharisaical attitude, but it's probably good to remember that God gives good gifts and when he was laying down the law he only asked for 10 percent and to not take advantage of the poor and needy. So if you can confidently say that you're giving and not taking advantage of people then enjoy the rest, just don't use it in a way that dishonors God.
The only other thought I have on this thread is that when I lose all my teeth I'm gonna enjoy copious amounts of ice cream, milkshakes, and biscuits and gravy.
Yes, I know Judas was the bad guy of the story, but even bad guys can make salient points. In fact, sometimes we remember something very specifically because it was the bad guy who said it.
It's interesting to note that the Bible makes it clear in John 12:6 that Judas wasn't criticizing the use of the expensive perfume because he cared about the poor, but because he controlled the group's money, and planned to steal from it.
This is another reason why his criticism has stuck with me -- it presents all sides of the dice.
I always took the question, "Why wasn't this (expensive perfume) sold and the money given to the poor intead?" as having several lessons:
1. Just the question taken at face value, translated as, "Can this money be used of something more worthy to the kingdom?" when asked sincerely, is important for us to ask our own selves.
2. If asked self-righteously, it's a double reminder of whether we are just criticizing how someone else spent their money (is God saying we have a right to do that,) and/or, are we just putting on a good show for an audience?
3. Ande ven if it's not just to look good to others, it's a blatant reminder to ask God to keep our own hearts in check: Do we really care about doing something good out in service to God or do we just like patting ourselves on the back, even just in private?