A workaround is to create and save an empty save file to start from every time. There are a couple on CurseForge with most worlds emptied of Sims and houses.
Once you have it blank, use Save As… and save it as “BLANK GAME” or something like that, and then Save As… again in a new slot as “New start” or whatever you want to call it and start playing. That way you can go back to the “Blank Game” save when you want to start a new game.
or… you can use the MCCC mod to delete all households in the game at once. There’s instructions online about how to do it.
