Instead of being a bunch of condescending assholes, you could instead fill the gaps in my knowledge.
We started out more polite, and explained the situation well, but you ignored all that was said. Even now, you don't seem capable of listening/understanding what's been said to you.
A series resistor is always required. No need to repeat more of what's already been said. It's been well explained. The cost of the LED is irrelevant - it's about learning good practices. No one with any knowledge of the subject powers up an LED without current limiting.
And calling people assholes is not on. I don't remember calling you names at any point, despite the fact that you were being stupid and ignorant.
Obviously I've just been wasting my time, since you know so much better. Good luck with it. I'm outta here.