My feeling is most use Lastpass because it's free and they don't know about Bitwarden, or (for the techies) didn't hear that Bitwarden passed a third-party code

My feeling is most use Lastpass because it's free and they don't know about Bitwarden, or (for the techies) didn't hear that Bitwarden passed a third-party code audit. Lastpass also has a bunch of features missing in Bitwarden, but they're largely long tail stuff. My biggest complaint is it doesn't support biometric authentication on desktop.