Mahbub,
Welcome to the forum. I hope you don't take this comment the wrong way, I've seen your other threads and wonder what kind of answer you are searching for? I've seen every answer that the guys have posted on your threads, over and over on other threads people have created through the years. As someone stated before, the answer will always be the same and it is ultimately your decision if you want to take the risk or not. You'll find on the forum that stories go both ways. Example: I grew up on dirt bikes and then small street bikes, then a 600cc for several thousand miles and ended up buying a hayabusa and...... Guess what?.... It is the first bike that put my behind on the ground. Before I knew it, I was laying on the street next to the bike. Did that send me home crying and put a for sale sign on the bike? Nope. I stood up the bike, inspected the damage, rode home hurting pretty bad, fixed her up (pretty damn expensive) and have put a few more thousand miles on her and love the bike even more now. I was very lucky I wasn't injured worse and only took a few weeks for the bruises to go away. All this being said, a hayabusa is a completely different animal and you won't have a crowd of busa owners cheering or giving you the reassurance you seem to be looking for to go get one. That's a decision you'll have to make on your own.
Again, hope you don't take this the wrong way and good luck on whatever decision you make.