Because every time "us" seasoned riders recommend something less than a 'busa or v-rod as a first bike there are the 1-2 trollish members who come on here insisting on 1000cc++ bikes as a first bike. These are the same guys running cars into ditches and all that, not surprisingly.
I completely understand where jules is coming from. If you come on here recommending full gear and a 650cc starter bike you have the same 1-2 diligent posters insisting to just buy a literbike and 'be done with it'.
Your life is trusted in this motorcycle. Your skills are not honed yet, and just because 50% of people are 'lucky' enough to not wreck their r6 doesn't mean it's for everyone. I personally know at least 4 guys who will spend the rest of their lives in wheelchairs from wrecking their first bike. 2 started on 600cc sportbikes, the other was a literbike, the 4th was a 250 who was t-boned.
Riding a motorcycle is no joke. Any idiot can pick up some gear, MSF, and a 600cc sportbike. It's a very very dangerous combination.
Be patient. Learn to love the ride rather than the power. I've posted about this many many times, but the person who starts on a starter bike and moves up slowly turns out to be a MUCH better and safer rider compared to someone who starts out on a 1000cc+ (even a cruiser......)