[pkkm]

I would say the opposite: In a high-level language for "everyday programming", as opposed to systems programming or high-performance programming, arbitrary precision signed integers are the right choice. They let you do math on things like a large file size in bytes, or a nanosecond-precision timestamp, without having to think about integer widths. You only need to think about "is this an integer or is this floating-point", which takes less mental effort than using a language like C with its large selection of integer types.