I think you are a bit irrational. As much right as you have to value bitcoins, everyone else has as much right to deem them worthless.
If you read my post I'm not saying anyone should value Bitcoins. I'm saying I don't want to get into the discussion of whether Bitcoin is safer and more prudent than USD.
Maybe I should have made this clearer but what I was talking about is for Wikimedia to use a payment processor for Bitcoin like Bitpay - just in the same way they use Paypal as a payment processor for credit cards. In that way, Wikimedia would be recieving USD when I pay in Bitcoin.