Some of the reasons I'm so against these types of things that are "exchanges"
1) Some people give things that are definitely in the "you REALLY shouldn't have" category
2) Most people have enough "little stuff" around anyway
3) If one decides to do "birthdays" instead of "Christmas" - what if one overlooks or forgets someone that thinks he/she is "part of the group"? As far as that goes - where does the "group" end?
I am NOT against giving - I am against getting into situations that can become "one more thing" to HAVE to deal with.