>>3879212Russian is useful. You get to connect with Russians and basically all the Slavs minus the Poles, as well as those people who were under the yoke of the Soviets like the Kazakh.
And yes, no language is impossible to learn with enough resources.
At least you're not learning Estonian or Korean or something monstrous in an alien way. Russian is at least related to the other 2 you've mentioned, and if it's is complex, it's complex in a similar way