For one, VMWare would hang repeatedly at the start of each VM whereas in VPC I could just create a VM profile and run.
I just found it easier for OSDeving and running any OS I needed. I found no considerable slowdown in using these OSes. If something works for me why the hell should I change it unless the gains are more than enough to warrant a change?
Nobody is asking you to change which virtual thingy you're using.
I'm not sure what you mean by 'hang', but if you mean that it freezes up, then that's odd, since I've never had that issue. Other than that, I haven't really seen any reasons why "VMWare is a horror for doing small things" -- I'm still curious what kinds of horrors you faced.