T.F.
My daughter cheered from 7th grade through 12th grade and was Varsity Captain her Senior year. She did not do competitive cheer.
I was reluctant as well... not so much for the same reasons you are. It has become a sport and it can be very dangerous. We had several visits to the Urgent Care and Ortho Dr for injuries (thankfully no terrible injury)
She was good at what she did and loved it. We both HATED the drama with some girls and many moms.
B is correct... My daughter's injuries for the most part were deliberate. I hated it when she was a flyer and when she was a base she'd frequently get a foot jammed in her face.
Some of the girls are ruthless and if they are not the "star" they make life miserable for the "star", Captain or other leaders in the group.
I have to admit that I was glad when it was all over.