The most annoying is how many times a phrase or clause are repeating within the same phrase or clause, and then again throughout the conversation. These examples have NO MEANING, and are repeated countlessly. I do not use these.
1. Uhhh.... (brain on pause)
2. You know what I mean..?
3. At the end of the day...
4. You know.... (we need another subject in here. Who knows what? There is no meaning. "Hello" can be sentence. But "you know" is like a dog barking. It's an excuse to say something, mid-sentence, when your brain needs a rest to formulate your next phrase.
5. Alright?
6. You might disagree, but "How are you?" is meaningless. "How long is a piece of string?" has a lot more meaning for me
Yep. I think the above are the same as a dog barking. There is no content, but probably the loudest you shout, the more it'll mean
I see most of the wrong grammar is because people never paid attention to how to read or write. Just use our voice to say anything (SHOUT) is all the matters. They never needed punctuation.