Because a motorcycle moving at 40+kph in what is, in effect, an extension of the sidewalk is a terrifying prospect, and a motorcycle going at 15kph just to be i

Because a motorcycle moving at 40+kph in what is, in effect, an extension of the sidewalk is a terrifying prospect, and a motorcycle going at 15kph just to be in the bike lane would defeat the purpose of owning a motorcycle instead of something less expensive.