@Ishina
Yes, contingent entities are contingent. But I was asking why you suppose the universe is contingent.
I've heard nothing in the prevailing cosmology that states the universe even began, let alone began at a certain point in time. Only that the changes to the arrangement of the already existing universe can theoretically be traced to a point 13-14 billion years ago, beyond which there is no prevailing cosmology.
Forgive me for quoting from William Lane Craig's
Reasonable Faith but he has some interesting referenced quotations from physicists on this question of the universe's beginning.
On p. 126:
P. C. W. Davies comments, "If we extrapolate this prediction to its extreme, we reach a point when all distances in the universe have shrunk to zero. An initial cosmological singularity therefore forms a past temporal extremity to the universe. We cannot continue physical reasoning, or even the concept of spacetime, through such an extremity. For this reason most cosmologists think of the initial singularity as the beginning of the universe. On this view the big bang represents the creation event; the creation not only of all the matter and energy in the universe, but also of spacetime itself."59
59. P. C. W. Davies, "Spacetime Singularities in Cosmology," in The Study of Time III, ed. J. T. Fraser (Berlin: Springer Verlag, 1978), 78-79
And on page 127:
As physicists John Barrow and Frank Tipler emphasize, "At this singularity, space and time came into existence; literally nothing existed before the singularity, so, if the Universe originated at such a singularity, we would truly have a creation ex nihilo."61
61. John Barrow and Frank Tipler, The Anthropic Cosmological Principle (Oxford: Clarendon, 1986), 442.
I should say though that I'm a bit wary of this notion of 'ex nihilo' and the statement that
nothing existed prior to the singularity and so forth. Craig himself, in response to the atheist counter argument, alluded to in this thread, that the universe may very well have came from nothing, gives quotations by physicists explaining the rather liberal use of the term 'nothing' in physics, and that physicists don't mean 'nothing' in the literal sense, as we might understand it.