I'm sorry, but 0.1+0.2 != 0.3 is fundamental. It creates difficulty, but you are not capable of doing math in a computer if you don't understand it and why it happens. Even if your environment uses decimals, rationals, or whatever.

The SQL `numeric` makes the right choice here, putting the problem right at the front so you can't ignore it.

That said, I completely agree with your main point. Modern software development is almost completely made of unnecessary complexity.