You are right, but at the same time when I say no with a reason, people think that they can debate. No just means no. You owe people politeness, but I don't th

You are right, but at the same time when I say no with a reason, people think that they can debate. No just means no. You owe people politeness, but I don't think that you owe them a justification for not wanting to do things. If it's rude to say no, it's rude to ask.