Programming Languages – Do Any Languages Use =/= for Inequality Operator?

Ditto @paxdiablo. The early programming languages were written by mathematicians--actually all of them were. In mathematics, by her own principle--reading left to right-- it makes sense in the way it works.

x = 2y - 4.

In mathematics, you would say this: Let x be equal to 2y -4.

Also, even in algebra you do this. When you solve an equation for a variable, you isolate the variable you are solving for to the left side. i.e. y = mx + b;

Furthermore, once an entire family of languages-- such as the C family-- has a certain syntax, it is more costly to change.

Does this help to deter programmers from abusing overloading 
in the aforementioned manner?

Well, I think first we should define what the abuse is? File.Delete in C# simply deletes a file without even notifying the user about it. Thus, as a developer, I can simply write this code:

List<string> files = Directory.GetFile("path").ToList();
files.ForEach(f => {
    File.Delete(f);
});

Is it considered abuse? OK, you're free to define + symbol (character) as an operator which votes up and - as a vote-down operator. But is it considered abuse?

Also, are you forced to misuse these features? For example, a driver can simply turn the wheel to get to pedestrian area and kill may people? Should we lock the wheel?

I mean, after all, even if there is an opportunity for any kind of abuse, who's gonna get hurt? Developer.

In spite of highly OO infrastructure, you can write procedurally in C#. Is it abuse?