Bihari here

I'm curious, I'm am a sophisticated guy don't consume alcohol, smoking or pudiya. I'm fluent in every language. But, why people from other state keep saying "aap Bihari nhi ho". Even I'm good looking (main khud ki tareef nhi karta but just for the context bolna pad rha h). I want Bihar to be prosperous, developed etc, so most of our people get jobs and work here and develop Bihar. I'm asking to you guys do you really really hate us so badly?