Why does SASS have two syntaxes?

Question

css

Good evening!
It’s already the end of 2017 and I still mastered gulps + sass, but I just can’t understand: why and why does SASS have two syntaxes? One without brackets, and the second - with them (scss is the one). I write without brackets, but if I'm looking for some code / example, I often find it with brackets, why is this option more popular?
Thank you!

Answer 1

1 - It's clearer thanks to brackets
2 - scss is compatible with css. sass code if you shove it into a css file will throw an error. It makes the code easier to maintain

Answer 2

But sass is easier :)

Answer 3

and even better stylus, he generally eats everything and does not beep ...