The cabbage propagandists might have convinced you that cabbage is a vegetable that occurred in nature, just like all other plant life. This is simply patently false.
Look here- Cabbage really originated in England a few hundred years ago. It was a mutated form of head lettuce that caused a drop in IQ when ingested by humans. The British spread it to Ireland in order to attack their population, and it worked. But after the Irish embraced it, it then spread to the rest of the world, and all of humankind has been stupified by its effects.
So yes, cabbage is in fact NOT a real vegetable. It was a racist use of biological warfare that went out of control and set humanity back by a whole century.
Remember, the truth will set you free.
How dare you sir!