Never been interested in doing even half that mileage in a day on any of the bikes I've toured on.

As for for BMX bikes being toys.... I can't agree with that.
I think for their owners they would be as valid as any other type of bike.
Next you'll be suggesting that theres no such thing as a touring bike with 20' (406) wheels

I think its fine to state your preference but you need to be careful before stating something as fact.

I've been rolling with Shimano PD-T780 XT Trekking pedals for the last couple of years and pretty happy with them due to being platform on one side and spd on the other.

http://www.jensonusa.com/!Pk3aQO6To6...ore-XT-Pedals?

I'm clipped in when on the tarmac but prefer to be unclipped when the surface is in any way technical where its easy to stall a laden touring bike and there might be the need to quickly put a foot down.