This plus and minus thing is of no real significance, unless you want to study things at the atomic level, and they then become positive and negative.
We are all aware of atoms, electrons, protons, etc, etc. They are so small they can not be seen, just traced.
The reality is that at this point in our existence, we do not yet fully understand how or why existence began, and even if the gaseous theory is correct, the particles had to come from somewhere, as it is very hard for us to comprehend something just appearing out of nothing!
Who knows?
The real answer is of course nobody, and it will probably be billions of more years before the answer is fully understood.
Until such time, we will continue to get other peoples thoughts on existence, and we all know how many variations of same exist.
Some have used, and continues to use, this to their advantage to accumulate wealth and gain power.
That is life!