It is the hardest decision you will ever make, and having made it before doesn’t help make it any easier. All kinds of things factor in, and it is different for each dog and each person. It does feel like murder sometimes, but in reality, you are giving him the best gift, freedom from pain. The screaming from a broken leg is the worst sound I have ever heard. I have heard it twice, and hope I never hear it again. I hope you can enjoy the time you have left with Joey, remember, he doesn’t know anything is wrong.