Why is there something instead of nothing? Why is there something instead of nothing?
Why there are clothes , why food , why shelter , why surprise , why anger , why love , why disgust , why father , why mother , why child, why atom , why Einstein , why Buddha and also why Universe?
Buddha said sabbe sankhara anicca (all conditioned things are impermanent) ... therefore all things, whether tangible or intangible are anicca (impermanent) but why? Why not nothing? No conditionality ever?
This sounds like the type of philosophical questions that is mentioned in the Acintita Sutta:

Conjecture about [the origin, etc., of] the world is an
unconjecturable that is not to be conjectured about, that would bring
madness &amp; vexation to anyone who conjectured about it.

You just cannot speculate on things like this. It will make you mad, says the Buddha.
It also doesn't help with the path to end suffering - see Parable of the Poisoned Arrow. This means such type of questioning has no practical value.
From MN 63:

“Here, venerable sir, while I was alone in meditation, the following
thought arose in my mind: ‘These speculative views have been left
undeclared by the Blessed One…If he does not declare these to me, then
I will abandon the training and return to the low life.’ If the
Blessed One knows ‘the world is eternal,’ let the Blessed One declare
to me ‘the world is eternal’; if the Blessed One knows ‘the world is
not eternal,’ let the Blessed One declare to me ‘the world is not
eternal.’ If the Blessed One does not know either ‘the world is
eternal’ or ‘the world is not eternal, ’ then it is straightforward
for one who does not know and does not see to say: ‘I do not know, I
do not see.’
“If the Blessed One knows ‘the world is finite,’…‘the world is
infinite,’…‘the soul is the same as the body,’…‘the soul is one thing
and the body another,’…‘after death a Tathāgata exists,’ …’after death
a Tathāgata does not exist,’…If the Blessed One knows ‘after death a
Tathāgata both exists and does not exist,’ let the Blessed One declare
that to me; if the Blessed One knows ‘after death a Tathāgata neither
exists nor does not exist,’ let the Blessed One declare that to me. If
the Blessed One does not know either ‘after death a Tathāgata both
exists and does not exist’ or ‘after death a Tathāgata neither exists
nor does not exist,’ then it is straightforward for one who does not
know and does not see to say: ‘I do not know, I do not see.’”
“How then, Mālunkyāputta, did I ever say to you: ‘Come, Mālunkyāputta,
lead the holy life under me and I will declare to you “the world is
eternal”…or “after death a Tathāgata neither exists nor does not
exist”’?”—“No, venerable sir.”—“Did you ever tell me: ‘I will lead the
holy life under the Blessed One, and the Blessed One will declare to
me “the world is eternal”…or “after death a Tathāgata neither exists
nor does not exist”’?”—“No, venerable sir.”—“That being so, misguided
man, who are you and what are you abandoning?
“If anyone should say thus: ‘I will not lead the holy life under the
Blessed One until the Blessed One declares to me “the world is
eternal”…or “after death a Tathāgata neither exists nor does not
exist,”’ that would still remain undeclared by the Tathāgata and
meanwhile that person would die. Suppose, Mālunkyāputta, a man were
wounded by an arrow thickly smeared with poison, and his friends and
companions, his kinsmen and relatives, brought a surgeon to treat him.
The man would say: ‘I will not let the surgeon pull out this arrow
until I know whether the man who wounded me was a noble or a brahmin
or a merchant or a worker.’ And he would say: ‘I will not let the
surgeon pull out this arrow until I know the name and clan of the man
who wounded me;…until I know whether the man who wounded me was tall
or short or of middle height;… until I know whether the man who
wounded me was dark or brown or golden-skinned;…until I know whether
the man who wounded me lives in such a village or town or city;…until
I know whether the bow that wounded me was a long bow or a cross-bow;
…until I know whether the bowstring that wounded me was fibre or reed
or sinew or hemp or bark;…until I know whether the shaft that wounded
me was wild or cultivated;… until I know with what kind of feathers
the shaft that wounded me was fitted—whether those of a vulture or a
heron or a hawk or a peacock or a stork;…until I know with what kind
of sinew the shaft that wounded me was bound—whether that of an ox or
a buffalo or a deer or a monkey;…until I know what kind of arrowhead
it was that wounded me—whether spiked or razor-tipped or curved or
barbed or calf-toothed or lancet-shaped.’ “All this would still not be
known to that man and meanwhile he would die. So too, Mālunkyāputta,
if anyone should say thus: ‘I will not lead the holy life under the
Blessed One until the Blessed One declares to me: “the world is
eternal”…or “after death a Tathāgata neither exists nor does not
exist,”’ that would still remain undeclared by the Tathāgata and
meanwhile that person would die.