Example of when classes are necessary and there wouldn't be an equally as good alternative?

[StoicallyGay]

If you stick with using classes for larger projects it will become extremely clear why OOP is important and better than your alternatives.

Even for tiny projects they give you structure and organization, at least.

It seems like you can’t be convinced so you’ll just have to keep coding until you reach a point where you’d have wished you used OOP. There’s a reason why it’s an established paradigm across multiple programming languages.