Nadeem i think you have gotten a sufficient amount of explanations. Let me try as well, hopefully it might sink in.
1. It's in WP rules to not post in Roman Urdu. Rules are rules. In a swimming pool "No Diving" means "No Diving" either abide by it or go to another pool.
2. Roman urdu is difficult to read and the meaning may be distorted.
3. This is an english language based forum with the exception of posting in urdu, using an urdu font.
An example maybe of DAWN news, it is an English based news channel. That's it. Either use it and listen to it, or switch to a channel that speaks another language, urdu, sindhi, punjabi etc.
Do you get the picture ?
Hopefully there won't be any rebuttals from you.