I have thought about that a lot too Victoria. Here's my take on it...
If I get pregnant this month, my EDD would be around Dec 5. To me, that's early enough in the month to not necessarily be a *Christmas baby*. I, too, thought about possibly waiting this month, but I just feel like I have been trying for unsucessfully for several months after my m/c and I just can't bear the thought of not trying this month when this could have possibly been the month.
Also, my dh's birthday is Dec 27. His mom always made it a special day for him. She always planned a separate birthday celebration, used Birthday paper (NOT left over Christmas paper!), and didn't just *hold back* a few Christmas presents...she made sure he got separate birthday presents.
That being said, I mentioned to dh possibly not wanting a Dec baby and he said "what's wrong with having a December birthday??" I guess if it doesn't bother him and he's actually lived it, then it shouldn't bother me!
Sorry I wrote sooooo much, but it is obviously something I've thought of as well