Worst / best feature of any language:

Lack of / requirement of strict / dynamic / weak / strong typing. Just typing. Typing typing typing just typing.

Having to specify the type in C/++/#, Java/Kotlin is so annoying and delays the project so much by having to do declare weird classes with 3 or 4 fields just because you need it in this tiny line of code.

Not having good type support in JavaScript and Python is a pain in the eyes when you can't find what type each variable is, or when you pass a wrong argument to a function, and when you do, it shows the definition for the type in a .ty or.pyi file and not the definition itself which you have to find elsewhere. Spent half of my uni exams trying to decipher the type while it could've been a piece of cake if you just knew the type.

Love / hate relationship 😝