That’s not the most mature way to state it, but you have a reasonable point. I try to be careful about monitoring my kids’ behavior in public places. When people go for a meal out, they are paying for a nice time and not to hear screaming kids or dodge little unruly hooligans. Elsewhere in the thread, I noted that parents out of necessity choose their battles due to fatigue, selfishness, or letting small things go (but perhaps after recalibrating on what’s small). It’s as though parents’ tolerance for bad behavior increases.
Just like non-parents do not have a full appreciation for what parents go through, we parents forget what it was like before kids. Parents and non-parents tend to self-sort into disjoint social networks. Parents of school-aged kids forget what it was like to have infants and toddlers. Oh, just wait until they’re teenagers, say the helpful, encouraging grandparents.
Think about others. Put yourself in their shoes. Stop being selfish. That’s good advice for all of us, no matter where we are in life.