Shaman, I'm honored I got included in your Christmas celebrations
Sometime in the 80's/90's Finn got intrigued by Jeff Cooper's Scout Rifle concept. The 308, due to its NATO/Military status, was Cooper's primary choice as a chambering for the Scout Rifle. So, Finn started using the round more and more, and I suspect being a practical Norwegian (think cheap - I'm 75% Norwegian), he probably latched onto it for its preeminent practicality. Hardly anything is cheaper than 30 cal bullets and 308 brass. He also appreciated it did everything the 30-06 did, but kicked less. He used the 308 in the last few years of his life competing in the Keneyathlon (a practical, field shooting competition). I think Finn just liked "things that work." And the 308 does.
I agree with BWalker, I think the 7-08 is the slightly better mousetrap - but not in terms of wide availability. In that case, the 308 wins all the marbles. If I lived in an isolated rural setting anywhere in the world, and lived off the land (by the rifle) I'd take the 308 over anything.