I agree. But a lot of the argument seems to be you can cast this a lot and change your alignment. If you wouldn't allow a few thousand acts of charity (that don't actually hurt your wealth) to offset evil acts, I can't see how casting protection from evil is any different.
Ok. That's fair. My post was very badly phrased and aggressive. My central point, which I can see you not getting, is that alignment is pretty much "magical tea time" all the time. There aren't going to be hard rules on it because morality is something that varies a lot between tables and defining things strictly from Golem HQ would just not work. For people who like the rules to be more codified and precise, I see how alignment which is messy as all hell drives you nuts. However, if you are already using alignment and judging whether giving orphans bread is a good act or how it balances with you making them orphans, then an aligned spell falls into the same bracket. It is defined by the table, and that's the only way alignments can work at all. So saying this particular part is "magical tea time" when all alignment is seems a little dismissive and patronising to people who don't share your distaste for alignment in general.