What is the advantage in having your part developed centered on the point of origin?  .

Do you always extrude from Mid-Plane?

Is this carry over from the AutoCAD days? (I've opened enough of AC files where the 0,0,0 was like miles from the drawing etc)..

Is there a specific software that you export the SW file to that makes it much easier when the part is modeled 0,0,0?

Or... are there mythical solaces to the entire madness?

My reasons to make sure the parts are 0,0,0 - Zero, Zero, Zero - my workflow would have a coronary if that would be the case....