"No spontaneously reborn beings" One of the 10 wrong views is the view that there are no spontaneously reborn beings.

The preceding 2 wrong views in the sequence of 10 are "there is no mother" and "there is no father".


Now beings born on earth mostly see beings coming to existence due
to a mother and father. Most will never see a "spontaneously reborn
being". So how does one form the view that there ARE spontaneously
reborn beings when one has never seen such beings? Or is it adequate to simply not reject the
possibility of the existence of such beings, but not form the view
that there are such beings?
Also, if one has the view that there is a mother and father, how
does one reconcile these 2 views with the view that there are
spontaneously reborn beings, which we are also told are born without
a mother and father? Further, say if all the beings we encounter
were born spontaneously, how can we form the view that there is a
mother and father? Or do the words mother and father mean something other than the biological parents or the first pair of primary carers, e.g. DP verse 294?
Why is this view included in the 10 wrong views? The other 9 views
does provide a framework for beings to avoid evil and do good.
Rejecting this wrong view and accepting its opposing view that there
indeed ARE spontaneously reborn beings requires a stretch of the
imagination for many. What is the moral purpose?


Once again these questions are asked only for academic interest.
A view is when you affirm a certain thinking to be true. Simply having a thought of doubt doesn't qualify as having a view, even though it's still unwholesome. 

A human taking the view that there are no spontaneous beings solely based on his inability to see them points to a flaw in his thinking. I.e. thinking that anything that cannot be seen does not exit. If a born blind person has the same thinking, he might even deny the existence of the sun and the moon. This is similar to taking the view that the earth is the only place with sentient beings in the whole universe because we haven't seen any aliens yet. The same line of thinking can make a person take the view that Nibbana does not exist, because he hasn't seen it.

Not believing in father and mother is more about thinking that there's no use in caring for them, which is wrong and detrimental. It's about biological parents.