Ok, I know I already asked this stuff but I thought that I should've organized it. So here it goes. By the way, quick shout out to people who answered my original question. I guess it was off-topic but I just wanted answers for something I've been wondering for a while. Also this is my first day on stack exchange. Sorry this is long: 1. Is saying "come on" and "let me" rude. And I mean let me in a way like "let me see that" and "let me have your phone". 2. If it is rude to say commands without please,then why do people do it so often. (And I mean certain commands. Like, ones where please could be added appropriately) 3. Am I the only person who does say let me and come on? Also I don't use imperatives that much. I usually rephrase them to be statements and questions. Is that weird?
The answer is all over the map. Also, I'm not sure if it's a question about language so much as behavior.
Anyway, the answer is "it depends."
If a stranger walked up to me and said "Let me see your map," I'd be offended. In fact, I'd probably back away while bracing myself for a possible fight with a man who might be a weirdo or trouble-maker.
But if you're working on a construction project with a friend you've know for years, do you really want to say "please" every time you need to make a simple command or request?
People are especially apt to dispense with "please" in potentially dangerous situations (e.g. construction sites, the scene of an accident, etc.). There's a lot of tension in the air, and people generally just say what needs to be said as briefly as possible.
My job is actually semi-dangerous, and I get offended very easily by co-workers who tell me to do something without adding "please," "would you mind," etc.
In summary, the answer depends largely on familiarity (friend vs stranger) and the context (e.g. casual conversation vs the scene of an accident).
In numerical order...
Saying "come on" and "let me" may or may not be rude, depending largely on the context. There are also situations where one person might consider it rude while another might consider it OK.
Why do people say these things? That's all over the map. Some people are just rude, while others may not realize they're being rude.
"Am I the only person who does say let me and come on?"
Of course not.