Pros
You get a regular paycheck and great benefits. If you pass your probationary period, there are few ways to get fired. Can get jobs in many remote and beautiful parts of the country. Some jobs have you working with local ranchers - who are great people and make the job a lot of fun.
Cons
My experience has been very challenging. My supervisor does not like people, is absent from the office a lot, and does not get along with anyone at the office. I have had to learn a lot of my job on my own. My District Ranger told me to do things that violated conduct and ticked off my supervisors. He put the blame on me. My supervisor told me to do things that I then got in trouble for. I have text messages proving she told me to do them. The retention rate for the FS is 42% after the first three years. The organization acknowledges that they have a hard time even getting applicants for jobs. They think it is due to pay, but it is actually due to poor leadership. I have been gas lit, bullied, and retaliated against me looking for help, my supervisor discouraged me from reaching out to my union about housing costs (which is patently illegal), lots of other problems.