Welcome to Amiga.org, the best Amiga site on the Net (IMHO).
You sound like me with all those computers. I have never sold any either and those that I have given away always come back when the person using them no longer wants them. I think my current count of Amigas is around 18 or so, one old 533mHz Celeron laptop (literally falling apart), my Titanium PowerBook that is in need of repair, an old P-II 400mHz PC and my Son's new Athlon x64 3000+ PC we built together in August that I am typing on right now. I have been collecting network cards for the Amigas and hope to add several of them to the home network very soon. I hope it is not too painful a task, but can't imagine it being any worse than my PC experiences with networking.
Is your SX32 the Pro version or the newer regular version w/out the 030/50mHz?