Yes, mock, ridicule, deride, sneer, scorn, scoff, tease, taunt, goad, heckle, and generally humiliate anyone who asks this question. The person asking this question either has mush-for-brains or is (more likely) thinking with his testicles (which, despite their relative smallness and tremendous sensitivity, are responsible for the vast majority of foolish young male decisions). Since this question comes up most frequently in the context of sportbikes, take your friend to a local club race or – better yet a national – to see what those little 600s are capable of doing. If that’s not a possibility, perhaps some online videos will do the trick. Then remind your pal that the 1000s can wait, and by the time that he’s ready to ride one, they’ll be even faster than they are now.