Prefix notation isn't unconventional and it has many benefits.
The main one being if you want to add many many items together it's much easier IE (+ 1 2 3 4 5 6).
Instead of doing an operation between two numbers you are apply a function to a list of inputs. In the "+" function's case you are adding them together. With this in mind, it's no different than most other programming languages. You would never have your function be in the middle of your arguments/inputs.
In python its Foo(bar, bar) and not bar Foo() bar, which obviously doesn't make sense.
The main one being if you want to add many many items together it's much easier IE (+ 1 2 3 4 5 6).
Instead of doing an operation between two numbers you are apply a function to a list of inputs. In the "+" function's case you are adding them together. With this in mind, it's no different than most other programming languages. You would never have your function be in the middle of your arguments/inputs.
In python its Foo(bar, bar) and not bar Foo() bar, which obviously doesn't make sense.