Have you ever bought a pet and then regretted it

I've never bought an animal, all mine are rescues. They needed a home and I wanted to give them a home.

Was a bunny I gave it back to the original owner but after a year I still feel terrible about it

I rescued a shihtzu. She was going to have him PUT TO SLEEP because his bad behavior. I was like nah, give him to me. You're just a bad trainer.

Noooope. Nope. Nope. The dog is unteachable. I'm sort of attached now but half the time I don't really like him. :/

No. I did sort of regret adopting my current little dog, at first, but not because I wasn't already very fond of her. I kept her, is what I did. Although I did not "buy" her...the adoption fee was quite high.