Houses aren't paper. You didn't give a reason why being able to sell or buy houses quicker and for a smaller bid/offer spread is a bad thing.
If someone limits value creation to tangible things only, like making trinkets, go to landfill, and see the ultimate value of trinkets. They're wasting assets. If you think it's not just trinkets but services that provide value, go hire a lawyer. Spend $600 just to file some paperwork. At least traders help keep the market liquid for the retirement investments of the people who make future trash to fill landfills, and who overcharge people for simple services. The world of "value" creation isn't that glamorous to start with.