@Serendipper

Then how do you define infinity?

The same as you, but there can be an absolute infinity, and specific infinities.

Unlimited in some ways and limited in others is unlimited in quantity and limited in identity/category.

Or unlimited in quantity here/now, but limited there/then, or unlimited in x qualities, but not in y.

I can't conceptualize it and you can't either. In actuality, where in the universe do you suspect that it may be possible to draw an infinite line in one direction, but not in the other?

Conceptually you can draw a line anywhere, but you can also conceive of a road ending one way, but not the other.

You can also conceive of an impenetrable wall that keeps everything this side of it from crossing over, not that such a wall is necessary for a road to end one way, but not the other.

Beyond the wall, there might be nothing, not merely empty space, but no MEST at all, or there might be stuff.

Then, at this moment, it is not infinite because there exists a place for more road.

It's endless backwardly, and endful forwardly.

How can you propose having an infinite road when clearly we could make it longer?

You can make it longer forwardly, but not backwardly.

A road that is truly infinite would extend around and around the universe many many times until it occupied every planck cube in the universe, completely displacing all matter, and until it eventually connected with itself for lack of having anywhere else to go. To say that isn't so is to say the road has a boundary which would make it not infinite.

It has a boundary backwardly, but not forwardly.

Yes it does matter because if there is a place for another apple, but no apple is there, then we have found a boundary and therefore the number of apples is not infinite.

Apples could unendingly sparsely populate the unending universe, and still be unending in number, which means some infinites could be bigger than others.

Size must have a zero like temperature and speed or else it couldn't exist. We can't get infinitely colder, infinitely slower, infinitely smaller and if we could, then temperature, speed, size would have no significance/meaning.

I'm not so sure, for example, if two things are both infinitely divisible, but, finitely multipliable, if you will, than one of them could still be bigger, stronger and so on than the other.

But even if things are necessarily finitely small, the smallest unit of matter, motion and space might still be centillions of times smaller than quarks.

It seems weird...asymmetrical to me the universe could be infinitely big, but not also infinitely small, and if a thing could be infinitely big, and not infinitely small, than why couldn't a thing be finitely big, and also infinitely small?