The most important benefit of accepting Bitcoin i could think of at the moment is the fact it's like an payment with possibility of more profits. Let's say if I have received $10000 as a payment and in a week the akue f Bitcoin increases by 10% then I would have $1100 if I hodl it.

But I strongly object to your point saying it's cheaper than western union, I think you should check the transaction fee during bull run or when Bitcoin's value is higher.