One of my recent clients is a Blending service for Bitcoin. I've been wondering at the role of blenders and why Satoshi did not make Bitcoin completely anonymous like Monero or Zcash or maybe that was his plan as the project evolved. Perhaps the developers he handed over to did not realize that an anomymous Bitcoin would have been closer to cash the way a premier crypto that should replace fiat should be. Granted, this will favour criminals in a way (the way they gravitate towards Monero) but it would have made Bitcoin the perfect instrument for value transfer.
One reason might be that Bitcoin's primary intent wasn't privacy -- it was trustlessness. There is something intuitively attractive about a completely
transparent and predictable supply with regard to money. Satoshi also may not have known how to design or code an anonymous protocol like Monero.