I say LC you gave a great answer to great question.
There is no ‘end’ with word ‘infinite’.
In Latin it means “endlessness”.
It is unmeasurable term. It cannot be numbered. It is only a conceptual (figurative) term.
More simply, if you can number it or measure it then it is not infinite!
Negative or positive is mere conceptual also…meaning going the opposite way…endless one way and endless the other way.
One way <--------------------------------------------------------------> Other way