It is not true that no one is using Bitcoin to pay for things. We need to increase the block size so that more people can use it, it is impossible to effectively discriminate between spam and legitimate transactions like remittance for example. We should not attempt to dictate what uses of Bitcoin are legitimate and which are not, Bitcoin is permissionless.

The idea that we do not need to transact in Bitcoin is deeply flawed. Unless you think that Bitcoin is just a way to get rich, that when the price soars we exchange for fiat making us more wealthy. This would make Bitcoin like a pyramid scheme, this is not viable being a zero sum game. This is not how I see Bitcoin and even if I did it would still be flawed since to exchange to fiat and vice versa would still require us to transact, and to enable more people to do this we would still need higher throughput of transactions. I think there is a difference between holding in order to sell for fiat, and holding until we do not need to exchange back to fiat. This would imply that one day we should be able to exchange our Bitcoin for goods and services directly. Which I am already doing today for many things in my life, if the blocksize is not increased over the long term I will lose the ability to transact on the Bitcoin network directly. Because it would become prohibitively expensive and transactions would become unreliable. You can keep repeating that no one uses the Bitcoin network to purchase things as many times as you like, it does not change the reality that many people do use Bitcoin. Including in my own life, which is a counterfactual to your statement.