The actual answer is because the universe had to pick a finite number and it probably doesnt use meters as an internal measurement ruler for scaling so
Do you really believe that in all of eternity, we happen to be just four and a half billion years in? We are probably on our infinite life, and have infinite more to go. Just completely random lives, no idea where we will end up, nothing persists.
Username checks out.
Ah yes, disagree with me = Dumb.

Well, to be fair, you are talking about “infinite life”, and even a collective (“our”) infinite life, which unfortunately makes no sense. Mind you, the comment you are replying to, where the universe apparently has agency, is equally as scientifically valid.

And to be even more fair - it’s in your own username.That said, there’s no reason for name calling.

Fair enough. It makes more sense if you are a reductionist, and you also deduce that matter coming into being makes no sense, and that it could probably happen the same way again.

It also makes no sense that there would be nothing for an infinite amount of time, then the universe just pops into being one day, and we happen to be those lucky few that come to exist by sheer chance.

It’s more likely that the universe just has boom and bust cycles. Over time, through sheer randomness, it comes into being again. I don’t believe there is anything so special about us that can’t be recreated by sheer randomness. If we are just patterns, any pattern that can happen, can happen again as well.

So there we go. There are a lot of things that aren’t clear, like how specific does this pattern have to be (do we have to start with the exact same lives? Or will we be some alien snails with mild sentience).

It also makes no sense that there would be nothing for an infinite amount of time

Time only started existing after the Big Bang. Before that, there was nothing.

Because zero mass &/ energy has no space and no time, right? Which means, some external event must have started the big bang, if there was one.
When you say it “makes no sense” or it “makes more sense”… based on what? Because there was a lot of science in the comment above to base things on. But your comment seems more like its based on feels.
Mostly just deduction I suppose. Whatever, if I ever retire, and ever recover, I will finally be able to study these things.
Deduction? Based on what?
Ah forget it, I’m too tired for this