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It’s not really about the sarcasm itself, what they were saying was so ridiculous that having that as an actual opinion is just completely unrealistic. It shows that your conecpt of reality in ragards to yourself, i.e. self-awareness, is currently very lacking.
I’m glad :) I hope you can get to a better place with your depression. I’ve been through it, I know how much it sucks. If you need more advice/explanations/help, don’t hesitate to ask.
Many people in here treated you very unfairly, because you did sound very much like you’re saying “I’m incredibly amazing and can do nothing wrong”, and some people assume that such a person could never do something different and they absolutely hate that.
A healthy confidence is incredibly important, but so is knowing that you’re not perfect either. I’m very proud that it seems like you can do both :)