Pros: professional staff attitude among co-workers
Cons: you have to like children, including on their very bad days.
After career change, I am a new Supply Teacher in the Elementary Panel. I thoroughly enjoy working with the students and find my colleagues and administrators (Principles and VP's) have been tremendously supportive.
Although on-call, workload is such that I can get up every day ready to go to work, and 80% of the time I will be placed. Often I know of placements ahead of time.