Most staffing companies are pretty much the same. High turnover, high stress, aggressive goals/quotas, frat type environment, cultish, lots of happy Hours etc etc. However, some people really like this type of environment and flourish in it. Also, if you are good then you can make a lot of money.
There are some pros to starting out your career at a staffing agency: It will be really good training as a recruiter/sales and you will be highly marketable to other companies, if you want to transition into HR or corporate recruiting, have the personality for it. But keep in mind that the job will be really stressful and there's high burnout amongst staffing recruiters for a reason. It's a grind it out type job.