Most recruiters last under a year, search LinkedIn for people who used to work at OfficeTeam/Accountemps and you'll see for yourself. Unrealistically high expectations of huge volume sales calls/interviews, most senior leaders have usually not ran a desk in many years and are often detached from the realities of the job.
For candidates/clients - the mark ups are significantly higher than any of their competitors, so candidates are often short changed as recruiters are under constant pressure to maintain these high mark ups.
Training is very good, but most people who join and like the industry find greater job satisfaction and respect elsewhere. Typically 70-80% of the recruiters are deemed to be performing below minimum standards.
Crazily high activity targets