Why would you assume that everyone has the same mental capacities as yourself just because you can't imagine having an ability you lack? Have you never hallucin

Why would you assume that everyone has the same mental capacities as yourself just because you can't imagine having an ability you lack? Have you never hallucinated, day dreamed or become aware that you're dreaming? How about visual memories? Because even if you can't will yourself to imagine a visual object, you can see them in those other cases. It means the same thing as seeing an external object, except without the external source. Your brain creates a visual experience independent of a visual sensation/input from the eyes. There's also ways to induce this with electrodes and magnetic resonance applied to the visual cortex.