I can't trust vets

This happened a couple years ago, but I can't get this out of my head. My dog had to be put down because he had a sickness that wasn't getting better and he was suffering. I was already upset because I had to dig his grave in hard red clay by myself while sobbing and screaming about the coming death of my best I've known since I was 6 years old.

The vets who came to our house and put him down was smiling the whole time, acting all giddy like it's a birthday party and they were both laughing with each other right after they walked out the door. No remorse. No sorry we had to do this or whatever. Just thank you come again.

I've never EVER felt so disrespected and hurt in my whole life! I know not all vets are like this, but I had to share this. Sorry if it comes across as whiny.