Because some consenting adults have a lot more power than other consenting adults, and that results in exploitation that we shouldn't abide in a moral, modern country. A huge international corporation versus an individual who will be homeless if they can't come up with a few hundred bucks for rent soon - do you think the negotiation between them would be reasonable?

In what world do some consenting adults not have more power than other consenting adults? Indeed, skills, circumstance, and capital all provide leverage. But consent, the most important factor in all this, is still necessary.

You support the effort, instead, to insert government in such a way to remove consent. Somehow things will be more fair if people have less liberty.

People don’t need do-gooders, bureaucrats, and legislators making every decision for them. Leave people alone to earn a living as they please.

One additional note - a great way for someone to come up with a few hundred bucks for rent soon is to be able to do a bit of ad-hoc contract work. But nope, that's against the law now.