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I see many of you don't like greetings for some reason. Before you comment, let me refute some of them already.
One of your arguments is "when someone says hi, they're not really saying hi to me".
Yes they are. Not only to you, but to everybody, because it isn't feasible to greet each person.
What's the big deal with that? Automatic systems for filtering? Come on... do I force you to greet anyone and add it to your questions? No! Why should you force me to NOT greet people? To "save text"? Why not limit vocabulary, BTW, and turn all question into Simple English? That would certainly save text.
What about jokes, analogies and other related expressions? Even writing style itself, I myself have a writing style that takes up some more space than possible, and many people do. Should that be fixed to conform to some standards? The important thing is not to type as little as possible, but to be understood. Would you prefer more machine-like questions?
Questions are not programs you need to optimize to avoid losing time. I enjoy knowing someone will read what I wrote, knowing I'm not just writing to a machine that doesn't feel, but to an actual person that might be offended if I downvote, and happy if I help.