Well you need sleeper trains only for long distances usually. Quite often you can buy more expensive cabin with 1-2 sleeping seats (eg if travelling with a frie

Well you need sleeper trains only for long distances usually. Quite often you can buy more expensive cabin with 1-2 sleeping seats (eg if travelling with a friend/partner). All of Russia is travelling in country via a sleeper train because of distances, slower trains, and sometimes more expensive/less optimal flights (eg a lot of flights are routed via Moscow). So it’s very normalised; I traveled this way since childhood, even going to Ukraine for holidays before the aggression started, and it was pretty fine experience, a bit rough in 90s/00s, but better now.