When answering the question of what I think about pegging, I have to say that I have never tried it. Once I was a bit afraid of the consequences. Now my woman is not a fan of such games.
On the other hand, I once had experience with rectal penetration, not sexual but medical. I was going to have a prostate ultrasound done through the rectum. The examination was to be performed by a female doctor. I had to undress to the waist and lie down on the table in a gynecological position. I saw a woman preparing an ultrasound probe. The probe was about 3 cm in diameter and quite long. I was a bit afraid of this and the doctor noticed it. She said she wouldn't put the whole probe in my rectum. The head was quite long, but I was afraid of its width. The woman placed a condom on the probe and lubricated it with lubricant. Contrary to my fears, the probe entered without problems and without pain. I thought such research was akin to pegging.
A friend of mine once confessed that his wife used to pegging. Once, his wife was furious with him for spending too much on his hobby. She said that he would stop being angry if he fulfilled her wish, which would be a punishment for him. He agreed to be quiet. Turns out she meant pegging. He asked her to change the punishment, but he refused. They went to a sex shop and she bought the equipment for that punishment. When buying, she told the saleswoman that it was for playing with her husband. He was very ashamed of it.
He had to go pegging at home. He said it wasn't painful, his wife opted for a fairly thin dildo. On the other hand, it was quite humiliating ... and exciting.As it was afterwards, his wife was very pleased. Now if he does something wrong, he is pegged instead of apologizing. He says it's better than arguing with his wife. He stated that his wife lacked domination. I thought that probably many women need power over their husbands, and this often manifests itself through pegging. More than once I imagined how I would feel if I was pegged. I guess I would feel a little fear and a lot of excitement.