Forever is just a matter of time. Ever means always, it means at any time. It means both of those things simultaneously. At any time, always.
For always. For any time. For ever. Forever.
What lasts, what remains, for the future. For all of the future. Without an end.
When I think about forever, not figurative, but literal, I realize I can never fathom it.
Never is just a matter of no time. Never means not at all, at no time. Not in the past, not in the future. Not at present.
Not now. Not then. Not ever. Never.
It is telling that as a species I believe we have a better grasp on the literal concept of never.