No doubt. But that mathematics also didn't allow a variable name "PI÷4", I bet.
In the case we're talking about, a user-created (variable) name may contain any characters except (, ), +, -, ×, :, ^, =, ;, |, comma, and space. Once created, it may be used system-wide in programs and equations.
Editing equations, spaces are most times inserted automatically. Just terminating a name and wanting to continue with the division operator / requires inserting a space manually since / is the only operator symbol allowed to appear in a name.