The obscure coinage "nothing" is self-contradictory. Nothing is nothing at all.
The very concept denies itself. We must understand that the linguistic usage of the term was always relativistic and metaphorical. Stuff like "What are you thinking about?" And people often say nothing, but they mean nothing important. Or "there is nothing in the freezer" but people mean there is nothing that we can eat, of course, there are air and water vapor in the freezer.
In space, there is vacuum negative energy and virtual pairs of particles...and even if there wasn't anything in space Space has at least one property, allowing motion through it, again not nothing.
The extrapolation of the relativistic concept to an absolute renders the concept of Nothingness self-refuting and paradoxical.
The pseudo question "Why is there something rather than nothing?" is an embarrassment to Science and Philosophy.
Post Scriptum - And this is important because it is a perfectly good example of why good Philosophy (there is a lot of bad Philosophy out there but that's another topic) is paramount to good Science and make sense Cosmology.