With blind indifference chance happenstance, there is no reason or logic.
There is always the possibilty that there is no reason or logic.
But you continue to find it when you discuss origins. It is woven into the fabric of the universe. We discover there is a way in which things work and a causal pattern to their existence.
Plus you continue to use it.
Damn English is so ambiguous! I mean that there may be no reason in the sense of 'reason = purpose or goal'. I think that reasons in the sense of 'prior causes' are real enough, but may be not so the 'teleological' sort of 'reason'. You my have meant somehing else entirely - that happens!
Reasons only come from reasoning beings. Yet we find reasons in the origins of the universe. A chance happenstance universe lacks this, yet somehow, down the corridor of time, this is acquired in this universe. How? As we unfold the process of origins we continually find reason in this process. We discover laws and can give a formulation to describe these laws or what happens.
It makes no sense from a blind unreasoning universe. Why would we be able to do this? From a blind, indifferent universe there is no reason this should be so.
There can be no goal because there is no goal setter, no agency, no intent.
So if we continually find reasons for things it makes no sense to think there is no reasoning being behind it. Some call this The Anthropic Principle, for there is so much "design" and complexity in the details of both the macroscopic (the universe) and the microscopic (i.e., the cell or DNA). Some have said there is a code in the DNA, for it conveys information. Small principles or constants altered in the slightest way would mean we would not exist.
This, from your worldview stance, would be chance happenstance. What I see is the Grand Designer. What you see as a fluke of nature, a cosmic accident.
The thing that always amazes me is why would you continue to look for meaning from the meaningless, and find it in the form of reasons.