Does Infinity Exists?

Time for a random talk. Well, I felt that we should have a random talk to probe your brain with something to think about. Can infinity exists? If this is true, can we say the universe is infinite? These type of thoughts come to mind when thinking on the subject. Well, for those taking advance forms of mathematics, we learn that limits can go to infinity, but is this enough? Is there some rock hard evidence that we can use to prove infinity? There is always the dividing limit case. If you were to start from a point and go half way to the end point and keep going halfway for each new start point, one should never be able to reach the endpoint, which shows infinite halves. A good choice of a example of infinity would be a circle. It is considered to have no beginning nor end, because it is all around the same. Some also consider a circle to have infinite sides and yet one could probably argue a circle having no sides but that would be easily disapproved by put that circle near a wall tangent to it. However, let us not get to complicated here. A simple way to prove infinity is given by a common household item, a mirror. So, if you do not believe in infinity, then please tell me what this is?