Why doesn't Jaxx make users create an account when other wallets do?

Jaxx has been designed with ease of use in mind, and one of our principal design goals is to remove as many friction points as possible. When you first open Jaxx and generate a wallet, the wallet's Backup Phrase (Tools > Display Backup Phrase) will be the only identifier or "login" you will ever require, unless you add a Security PIN in Settings.