Eip 1559 - why burn? Why not just not have a base fee?

I get that 1559 will potentially make ether deflationary and that's a good thing for investors.

However, i would argue that ethereum being used for actual day to day transactions would add a lot more value than just making coin owners richer. To do that you're going to need to make transactions free or almost free.

Therefore if that's the case, why charge a base fee at all if it just gets burnt and doesn't provide an incentive to miners? Not having a base fee would essentially make transactions free except for the network contested cases where you need to provide a tip to the miner.