With cash that limitation exists because there isn't really an alternative. That doesn't mean we should use it as example, being able to undo mistakes is a valu

With cash that limitation exists because there isn't really an alternative. That doesn't mean we should use it as example, being able to undo mistakes is a valuable feature. That's also one of the reasons most online accounts aren't E2E-encrypted, most people prefer having a way to reset their password/key over losing all access to data.