Why choose 8-deck shoes when single deck pays 6:5?

Why pick the 8-deck shoe over the single deck if the single deck is only paying 6:5? I was looking at a table list and caught myself doing this backwards, because single deck sounds better on paper, then you see the payout and it wipes out the nice part. At the limits i play, the shoe games are the ones that still say 3:2 (or at least that's what i'm finding), so i'm wondering what people are seeing here that makes single deck worth sitting at anyway. Is there some real edge to the single deck game i'm missing here (rules, pen, whatever)