Before character sheets were introduced, this is how many rpg's were played on roll20. You can also enter all your character info in bio and/or handouts as another option. I have to say though, we've come a LONG way since then. Most sheets are now ubber-powerful and flexible. Even if you don't care to use a sheet's built-in macros, sheet rolls, and roll template formatting and logic, just having access to all of it's attributes for your own macros is invaluable... If you design your token/ability macros accordingly, they dynamically adjust to changes on the sheet. ie leveling up, temp conditions, buffs, etc.