If bitcoin is useless, then explain why literally billions of dollars are flowing into it. The market determines the value. The market has spoken. You are wrong.
because the market don't care about the fee, the value you are seeing on the market is based on trading on exchange, which don't need to move any bitcoin, they are always there on the exchange and changed for fiat or changed back to bitcoin all the time
I tell essentially the same all the time
And many traders still move their coins in and out of exchanges, though they certainly prefer not to use the blockchain and thus not to depend on miners and how soon, or rather late, their transactions are going to be confirmed. Whenever there is a possibility I, for one, prefer to use payment vouchers which are close to instant and pretty cheap (at times, you even get paid some dust for using a specific payment channel)