I know there's something "magical" about a fixed supply, but is the only point to have as much scarcity as possible? Or is there a technical or game theory reason?
I think the argument for tail emission is something like "we have to incentivize miners but don't want to have high fees". My argument against this is somewhat vague, but I assume no matter what the miners receive in terms of block reward, demand for limited block space will always result in user fees.