Earlier quoted context omitted.
> Why? What benefit do you get from that? You're not like to negotiate a higher salary than you would without the recruiter, and you're not in a better position to get hired either (over the total spend of an employee's lifespan the recruiter commission is a drop in the bucket). Misaligned incentives. The recruiter is incented to get you to accept the position. Their compensation isn't tied to maximizing your happine…
Especially in tech, a recruiter's #1 incentive is almost certainly to foster a good relationship so that you come back to them when you want to leave. With people moving jobs every 1.5-3 years, a recruiter who consistently places people in positions where they are unhappy and underpaid is not going to make very much money 5 years from now.
Personally, I don't have a problem with recruiters. My skills are marketable enough that it doesn't hurt to have someone else looking to place me in a job.