They are just different, I used to hate all the brackets and semi-colons too. My first languages were things like COBOL, APL (another IBM language), BASIC and FORTH. None of which use brackets and semi-colons.
However, while the semi-colons are now no longer needed in JavaScript, I actually now find the brackets a very useful indicator of the structure and they tend to be rather more robust than the spaces vs tabs issues that used to dog Python.
Again, each have their strengths and weaknesses.
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