No. This is up to your own coding style. However when using apis As you wont have control.

Even though this question is pretty silly.

Find (or probably make) a font where all capital letters are just larger lowercase letters.

>If you're not sure on what big letters is, it's ABC instead of abc

Actually those are called "capital letters" or "capitals".

>and don't want them in a computer language

This is a BS and capricious statement that has nothing to do with programming.

Try the arts.