To dislike it when people walk into a room talking

[PatPending]

...... thereby interrupting everyone else who is having a conversation.
I'm sure you've all encountered them..... their problem/incident/contribution can't possibly wait?
They basically have no manners so they "arrive" in a room talking straight away. They don't wait until others have finished their convo but launch right in to talk to someone you are talking to.
Or am I just an irritable harridan?

My 10 YO does this because she's thinking what she's got to say is Very Very Important, well...she doesn't actually think before she comes in.

A ten year old doing it is different to an adult doing it, OK if there's just the one person in the room, but more than one and it's a bit self important.

That's it AgentZigZag - It's adults who do this that I mean. Just march in and interrupt/announce stuff when others are discussing something.
I'm not even sure whether it p**ses me off more at work or socially.
Actually, I think it just does my head in whether it's a work or a social situation.
Children, I get .... they have to learn they are not the most important person in the universe ... but when adults do it?? Who do they think they are?
Can you tell I experienced this today???

I hate this too. My DH does it, he will also do it when I am clearly on the phone, very very annoying.

YANBU. It's self-absorbed.