Even an unguided path and nature either need or are an explanation but i'm blowed why I should accept them as possibly the ultimate explanation which needs no more explanation especially when you are simultaneously counselling not to.
It might be an explanation for what follows, but that doesn't make it necessary.
It sounds like you want an infinite number of contingencies from an infinite number of necessities and if not, why not?
It's not a matter of want, it's a matter of recognising the possibility.
All I can say is that a necessity is something not constrained to do anything apart from what it comes up with.
That's not a necessity - a necessity is something that had to be, and we only have something as a necessity in the past if we need to justify how something in the present that constitutes a goal or intention came to be. If everything current is an unintended consequence of what came before, if there is no grand plan, then nothing is a necessity, it's just a series of events in block time some of which are subjectively before the present time from where we're looking.
There is no outside space in which it has degrees of freedom in.
We have no information on whether or not there's anything outside of the universe in which to find constraints, or a lack thereof.
It certainly isn't constrained by an infinite time since infinite time has an explanation external to it solicited by the question, why infinite time?
Time is a facet of the universe; the infinite 'regression' is possibly in some corollary of time in the extra-universal reality; with that in mind, how is that a question that makes sense? In order for there to be a why to infinite 'time' there would have to be something outside of that infinite time, but it's infinite so there can't be anything outside of it.
As opposed to time starting 13 billion years ago or just finite time.
Again, important to distinguish between the universe, and any broader reality in which that universe exists.
As for an extended period of time when nothing happened..... that could be infinite time couldn't it,
Depends on how you view time - to my way of thinking, yes, time is a structural component of space-time and is independent of the physical activity within it, but there is a school of thought that time only has meaning as a measurement of change, and in the absence of change there is no time.
The 'happening' therefore might hardly be said to be necessary then can it since it might have been a 'not happening' for an infinite amount of time.
Overall significance is not a measure of necessity.
O.