The point of destroying is presumably that you don't pay whilst you're sleeping, or otherwise not using the server.
Re: data, you can (optionally) do a wipe when you destroy a DO, but you could just delete the logs or turn off logging, which would be faster. Having said that, I'm not sure what in the logs would be harmful to you.
Re: data, you can (optionally) do a wipe when you destroy a DO, but you could just delete the logs or turn off logging, which would be faster. Having said that, I'm not sure what in the logs would be harmful to you.