The Absurdity of Infinity

Infinity cannot really obtain in concrete reality. All infinite that is actual collections of things cannot be infinite, it seems. And so arguably the collection of past events, because that constitutes if it's an end, if it's a beginning was passed, there are going to be infinitely many such events. So surely God also inherits all these sorts of absurdities and wouldn't we have an argument against God's existence on our hand? That's a very interesting thought.