Pardon for dissenting, and surely no one has the right to be nosy about another's finances, but isn't part of the cache of carrying a LV or other luxury bag just that... the fact that you ARE carrying an LV or YSL or etc.?
No, it doesn't make you an instant snob or anything, but you can hardly blame others for the questions or comments when they know you're carrying what would be a paycheck or two (or three!) on your arm.
Maybe they're jealous or something, or merely admiring your discipline or fashion sense. But I find the "poor me; people look at me funny when I'm carrying a $1500 bag" a little...I dunno, off-putting?
Why not just say "it's beautiful, isn't it?", smile, and keep it movin'? You can't be accountable for the rudeness of others.
My apologies for any offense.