What is the number zero? Is it nothing, or is it something? I say it is something and if I had to be specific I would have to say it is one, minus a negative one, or 1 - 1 = 0. Why do I say this?
The first issue is or problem comes from the creation of systems. To have a system in the first place you need a basic building block, unit, or quanta. In a number system for example we need to have a "1". In physics, the electron is the smallest known stable sub-atomic particle at the moment even though some will argue that it is a wave, but to have waves there must be a sea or structure of underlying particles to begin with. How else are all these analog waves exactly equal to each other in charge, spin, mass, etc. too for example all over the universe and what else do we have to perform measurements with? The transistor is the smallest switch or bit that we are using now with which to create electronic circuits. A penny is the smallest unit of currency we have in this country. There must always be some "smallest" unit that cannot be divided any further.
Therefore, one or negative one are the smallest numbers or quanta in our number system. Any fraction or function that tries to determine the quantity or value from the value of one to zero WILL BE WRONG. It is an "idea" just like infinity is, and can only exist as one. Trying to seek some higher meaning from it will only lead to problems or madness. A decimal is nothing more then a rewritten fraction or function that cannot be otherwise solved unless you break some rules of what is the "smallest quanta" in the first place. Decimal places allow you to solve fractions quickly without having to find a common denominator, since they are already referenced to the base power of 10. I wonder why 1/x skyrockets out to infinity again, all depending on how you approach zero...
Zero is an even number according to math and the definition of an even number. An odd number like one minus another odd number like one equals an even number like zero. One minus zero equals one and a negative one minus zero should be negative one meaning nothing changes. Even numbers stay even and odd numbers stay odd when either added or subtracted by zero (an even number). Look up the rules for adding and subtracting, even and odd number if you do not believe me that zero is even.
Multiplication and division just like decimal places and are simplifications of larger more complex functions. Trying to seek higher meaning from them is pointless and will only lead to more problems. Multiplying and dividing by zero will be wrong too, since they are nothing more then glorified addition and subtraction. If we were to multiply by zero what would the answer have to be or change to, and "be wrong". An even number would stay even, but an odd number would be forced to change to even. There is in fact no way to get an odd number out since we would have to multiply it by an odd number or two instead of an even number. That is a major problem. The only way to get an odd number out is to multiply by all odd numbers. For example 5 x 1 x (-1) = -5 even though there is no reason to and the answer is negative. We could also multiply an even number like four by two odd numbers and get an even number, 4 x 1 x (-1) = -4.
Three for example is an odd number and if we added or subtracted it from 1 - 1 what would we get? 3 + 1 - 1 = 3 (an odd number), and 3 - 1 + 1 = 3 (an odd number). If we did the same for an even number like four we would get an even answer. I could repeat this step over and over again and get the same answer over and over again. Therefore, why ever multiply or divide by zero since the answer will be "wrong"? Three times zero is not equal to zero, it is equal to three. If I were "forced to" then I should only either add or subtract "once" even though I should never really even bother to do the step in the first place and the result should be the same number as what I started with and not zero.
"Should zero be more then one or negative one"? That would be correct since zero must cover the distance on the number line from both one to negative one and should equal approximately "two" in total even thought they are opposite and cancel each other out. If you considered rounding or decimals then it is only equal to approximately one in total since it would only cover -0.5 to 0.4999, but that is wrong since one is the smallest number, quanta, bit, or step we can take. One covers the distance from it to almost two (1.999) on the number line. If you are forced to use fractions or decimals then you should be prepared for some possible errors, and really get some smaller quanta or base units if at all possible. If not then we have an "idea" or "concept" just like infinity is.