You say "don't exist anymore" but when was it better? Pre-Mac-OS-X you didn't even have an easy to access shell there on Macs, and Windows wasn't bash either. So if there was a golden era for that, it never included the two predominant desktop OSes.

De-facto standardization has at least brought us free officially-supported options for running Bash or other *nix shells on both of those platforms(if terribly outdated on Mac).