If you’re happy with AS, use it. I find it terribly verbose and tedious to write.
But be aware that it’s lacking many features available in other, modern languages (notably JavaScript). For example string methods, regular expressions, functions as first-class citizens, support for data types like dictionary and set (yes, I know about AppleScript records. And I know also that you can’t iterate over their keys). AS has not been worked on since ages. But even Apple has to update JavaScript to keep Safari working…