When we conceptualise reality as an ever-changing now, all those “nonsensical” confusing things about time such as time dilation, paradoxes of time travel and so on, disappear. Therefore, when thinking physics, we should stop thinking of time as a linear dimension and think of it in terms of rates of change instead. The universe will make a lot more sense.
Unfortunately, our brains seem to be hard-wired to conceive time as something that advances in a line (or cycle). Even language is biassed towards this paradigm. It’s hard for most of us to even describe another way of thinking because English words are inherently biassed to operate within the time-as-a-line framework.
Time as we observe it is basically just our human way of conceptualising the relative rates of change of different processes and in a way it doesn’t really exist.