Well...yes. My own life. It has a beginning and an end. I was born and I'm going to die eventually.
At which precise point did it "start" though? When you were outside the womb? Was it when the first entire cell was outside the womb? Is that really a "start", or is that just you and me making sense of our perceptions because it feels right? It feels right to me, I agree, but there is no magical reality that changed when you were born, any more than changed 0.00001 seconds before you were born, or 0.00001 seconds after you were born.
Start/end are useful logical labels, they do not actually "exist".
Also, was your birth not also the end of the period that you were not born? So there are not only an infinite number of starts, but an infinite number of endings that coincide with each and every start? Sounds like reality is everything, and you and I just lable certain things that we want to, as "start" and "end". If every start is also an infinite number of endings, can you see that the contradiction of start/end is evidence it's not real?
Okay, so why don't you tell me about one thing, other than this infinite reality, that is actually infinite?
If reality is everything, then what is this "one thing other than reality" that I'd be discussing? Non-reality?
As I said earlier, at this point science can't create matter out of nothing. But what if some day it could? Would you then change your position that reality is infinite? And by reality, do you mean that matter is infinite?
Here's the rub. As humans we have no actual concept of what "nothing" is, and philosophically cannot. So to hypothesize that nothing can exist, would immediately make "nothing" into "some existing thing with the quality of <blank>". Which is something by definition. We can no more comment on nothing, than you can claim that a rock is both a rock, and a frog, simultaneously.
That's no word game either. Science is silent on "nothing". As should we all be, because discussing "nothing" is exactly that...remaining silent.
-Mach