Physical proof that infinity isn't real

Physicist frequently use infinity when talking about fields (ex. V = integral of E*dr from 0 to infinity) but if the fields were infinite, be they gravitational or electric, they would span the entire universe and all things effected by it would collapse into a single, crushing point. This has clearly not happened and is not happening. QED, infinity is not real.

1 <= 1/2 + 1/4 + 1/8 ...... is breaking a finite number into an infinite number of fractions, but since they are all fractions of a finite number, the answer too is Finite..
But yeah, you are probably right..
1 + 1/4 + 1/9 + 1/16 + 1/25 ... may well be similar