One of my arguments too. Would you rather trust someone who is personally controlling the press by hand and visually verifying each step or someone drinking coffee while watching an automated machine churn away? Me, I'd take the guy standing in front of a Dillon any day. (that's me in front of the press, BTW)
On the other hand, none of the rounds he's reloaded for me have ever malfunctioned, so I suppose you could argue that hand-crafting might in some cases be better than relying on the factory stuff. I did have a 9mm round from a Winchester white box Walmart special fail to go off last year...due to a bad primer, apparently.