Some people really need to mind their own business and keep their mouths shut.
Yes, it is nice to take a break sometimes. Especially when you have multiple dogs and they are a handful... sometimes you just don't want to have to worry about things. I have had clients board their dogs with me for all kinds of reasons. One client was having a wedding at their home, and just didn't want to worry about the dog getting in the way or being stressed out. Another was in the middle of an out-of-state move, and needed to have the dogs out of the way and secure. Heck, sometimes clients tell me they feel a bit of relief just having the dog in the grooming shop for a day!
They're like kids. With some dogs you have to watch & supervise constantly, and it gets exhausting. A stressed-out owner is not going to be at their best with the dogs anyway. Nothing wrong with taking a break!
I find that when I'm on a petless vacation, I'm in awe of the fact that I can put on anything in my suitcase and it isn't covered with hair within 10 minutes.
I also find, however, that I really miss my pets after a few days. Oddly enough, I find that I miss my cats more than my dogs. My cats sit on my lap, cuddle with me on the couch, and sleep in bed with me... they're warm, furry, and unobstrusive, and don't take a lot of "management". In fact, I'm thinking about taking one of my cats with me when I go to my grooming seminar next month. Crazy? Maybe a little, but I have one cat who loves staying in hotels and having me all to himself. He needs a break as much as anyone.