Why do they have to put in a wheel that goes left and right. I love my MX-518 and I was so looking forward to retiring it for the G5. Brought it, just to discover the side scroll. It is just not useful and always hinders my gaming by getting mixed up with a middle click becoming a left side scroll. Do people like it that much. Out of the 40 people I ask at XLan (700+ gaming event)who own the G5/G7 they all complaint about it so why did they put it in the G9?