The IOTA Foundation announced the launch of the Nectar testnet for developers, the second preparatory stage of the transition to IOTA 2.0, scheduled for the end of 2021. It will be the prototype of a fully decentralized, censorship-resistant and commission-free Tangle protocol.
Hello.
I have one logical question that seem nobody has asked.
What is the purpose to have a coin "currency" in the protocol
if there is no commission for transactions?!

What are IOTAS used for?!