Depends on what you want to use it for. Game programming with UE4 is much nicer with modern c++ syntax, or anything where you want to push the boundaries; but I use kotlin for most things because the syntax is much more concise and the performance isn't an issue.
How much C++ coding does a modern game still require? I would've thought most of the (coding) effort would be in a scripting language inside the game engine's editors.
all my friends who do gamedev for their day job are 100% C++ except that one who generally works on the menus, settings, etc. (in semi-large / large french video game companies)
