Why fees?

If you guys have been keeping up, Nano has implemented a revolutionary security model since its last spam attack.

The network prioritises transactions based on balance * Least recently used across various balance buckets and principle reps are elected democratically based on users assigning weight to their trusted nodes.

This model is has no fees and removes centralisation due to economies of scale, this model can be applied to any L1 chains as well and would eliminate fees, what is your argument against it, looks like a no brainer and would lead to widespread adoption and real life use case of NFTs as fees however small are not a good UX.