headaches such as?
Even flash is 64-bit these days... there really is no reason to stay 32-bit anymore.
Well, personally, we have have issues with certain agents (Acronis, TrendMicro) on some of our 64-bit dual pathed environments.
While we have workarounds for most, I wouldn't recommend that type of thing for someone looking to replace Windows with Linux.
Having to tell them about 32-bit compatiblity (i.e. This page:
http://www.debian-administration.org/articles/534 ) is great, but for someone just wanting something to "work", I'm not sure I see the benefit.
The question is, what is he going to run that will really want/need 64-bit?
If there is something, then fine.
Of course, I live more in the server world, so YMMV.
desiv