I love that Bitwarden is Open Source. That's why I tried it out. It has all the features you can get from a non-opens source password manager but then you can read how those features in the code!
I think it's a great product but I stopped using it in favor of the iCloud keychain since all my devices are currently Apple. If I also had a Windows machine or an Android phone, I'd still be using it.
Complex passwords, documents, notes, credit cards and papers: so many things, all important, only one place to keep them, but easy and very safe. You don't have to be a software engineer to use it