Other than emotional and nostalgic reasons one other reason really sticks out:
TCPA
Both AMD and Intel have agreed to include this standard into thier CPU.
M$ will require that you have this specification to run its new software.This software will be incompatible with previous software.
When all this comes about it means you have to move to the new windows way of life which means a new PC, or go linux\ old windows systems which will be incompatible with the new stuff.
Your A1 board means you have the opportunity to move away from all this into a community where choice is the catchcry instead of being forced into a system which is being moved to a subscription based design for use of software.
Check this link out and then decide:
http://www.aaxnet.com/editor/edit029.htmlWith more users of the Amiga prices will drop, and so will the power of new machines.