Clearly you don't really spend a lot of time around motorcycles or motorcyclists.
#1 A 600 super sport isn't the worst possible choice for a beginner. There are many others that are worse. It's a bad choice, but there are many out there like literbikes, hypersports, and maybe Goldwings that make an even worse bike to start on.
#2 Real sport riders often shy away from the 1,000 class because they know they are often slower in the real world when you put away the spec sheet. They are also more expensive to buy, and they are often more expensive to insure. Plus, they are much more likely to bite you if you mistreat them.
