The problem is that a "finite" man thinks another "finite" man came up with the ideology that anything can be infinite. As logic deems humans have figured out that everything is finite, they are stuck with the finite attribute of all matter. The limit is on them. There are items like stars, sand, planets, atoms, that would seem infinite and without a possible way to measure, and most are contained with in an alleged knowable framework. Sand is not infinite, because it can only be found on planets, and is finite in the local sense, but it is not finite, in the logical conclusion that it could be elsewhere in the universe. If the universe is infinite, then sand would also be infinite. Infinity is not bound to lacking a beginning, it can just be without an end.