If you want to seek a job in the AAA Game Industry, you should learn C++, no other languages beat it in term of performance, number of resources and hardware compatibility (for the gaming ecosystem, it should not be true for other fields).
This can apply to Unity/Unreal too (for other kind of smaller game studios).
However, if your goal is to learn game development as a hobby (or to start your own game company) you can throw them away and just use what you want. ;-)
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If you want to seek a job in the AAA Game Industry, you should learn C++, no other languages beat it in term of performance, number of resources and hardware compatibility (for the gaming ecosystem, it should not be true for other fields).
This can apply to Unity/Unreal too (for other kind of smaller game studios).
However, if your goal is to learn game development as a hobby (or to start your own game company) you can throw them away and just use what you want. ;-)