Not all mathematical objects have correspondents in the natural world. 0 it's a mathematical convention. We can't have 0 apples in a basket. We either have som

Not all mathematical objects have correspondents in the natural world. 0 it's a mathematical convention. We can't have 0 apples in a basket. We either have some apples or we don't have any. If 0 is weird, negative numbers are also weird. Infinity is weird. Spaces with more than three dimensions are weird. Complex numbers are weird from an algebraic perspective but not that weird from a geometric perspective. Empty set is weird. Everything that's abstract is weird. For my mind abstract algebra is more weird than calculus and mathematical analysis so that's why I enjoy calculus and mathematical analysis more. But being weird and abstract can also be useful.