[qnr]

Let's say you accept bitcoin but immediately convert it to USD. In future one of your suppliers also decides to accept bitcoin. Now you can pay your supplier directly without the USD conversion step. This wouldn't have happened without you actually deciding to accept bitcoin in the first place.

I don't see any other way to bootstrap a new currency.

[wmf]

If you hold BTC for any amount of time between when you get paid by the customer and when you pay the supplier you're taking a huge risk.