Ok, how can space be infinite? Space does not exist does it? It is what we call nothing.
Is nothing infinite?
Is emptyness infinite?
Is void infinite?
You are conceptualising "space" as being the universe itself, yet the universe is something. Suns, light, gas, earth, heat, light, life. Where there is none of this, there is nothing. Space.
Your conceptualising of 'space' as being 'something' is exactly what I'm talking about
Take the universe itself. It is said to be expanding. How can that which is infinite expand? Expanding implies a limit. But where the universe stops, there is nothing. No-thing. Space.
Also, you cannot go further than the end of the universe, because you are part of the universe. Wherever you are, so the universe is also.
