Because I don't think avast 5 stable already. I'll get if it is stable. I don't want my system getting fucked up and ended with formatting the hard drive again. Because I don't have a back up with my files, games, and other application. Therefore I make sure that all things i'll put in pc is fine and don't have any irregularities. Because if I back up my files, games, and other application, I'll be needed another hard drive because it is huge as of now, and it will cost me extra money and I can't afford it because i am just poor.