This isn't a full grammar nazi situation - I'm not perfect so not bothered about grammar, as long as I can understand what's being said.
What bothers me a bit is how people use the exclamation mark. What's with all the shouting or emphasising statements? Isn't that largely what the symbol is for? But people often use it in place of full stop or as a passive aggressive signal or just because they can. It can be confusing when chatting with someone and you're not sure if something is wrong and they're showing it through '!' after every word or they simply felt like using it. It's worse if they've not been using it and suddenly it's there.
"Hello, how are you?"
"I'm fine!"
"Hope the issue was sorted! Let me know how it goes!"
"I've enjoyed my house and I'm glad we moved!!!"
"I'll let the plumber know!"
All in casual conversation with no need to exclaim anything and no other signs of any issues. Am I missing the point of the !, which requires more effort to find on the keyboard than the full stop?
What's the exclamation mark (!) for?