Cause fee replacing subsidy is the only way to ensure you can maintain the security without inflating the supply. Increasing the blocksize is not an opion. The solution is Lighting Network that allow cheap instant micropaymemts and leave large txs onchain where a tx is more expensive. LN is where most of the innovation is happening right now.
The people running the miners. The higher the price the more money they make.
Which means they’ll invest more to produce it, providing greater security to the network by making it more expensive to conduct a successful double spend attack. The users also want it to be secure. It’s a great alignment of incentives.
Yeah it just shows that there is incentive for prices to remain higher than lower