No one is sneering at $3,000, I think they're just expressing the sentiment that they would in no way be satisfied making $3,000 per month.
What I consider an acceptable lifestyle and what you consider an acceptable lifestyle could be far different. Please stop judging what kind of person someone is based on what other people consider a livable wage.
Am I a prick for wanting to be able to afford a $2,500,000 house, a couple luxury cars, and have enough stored away to send my kids to college without breaking the bank? That's not insulting to people who survive on less than $3,000 per month or being ungrateful for what you currently have, it's just financial ambition.