C'mon pusskin, that's like saying I'll keep a little bit of high explosive in case I need to get out of the house quickly in an emergency! You don't want to keep the stuff around.
OK, poor analogy I know but it's there if you succumb and feel the need and that won't help in moments of weakness.
I know it's tough, been there and done it and wish you all the best, the benefits are immediate and life changing.
As Mr Churchill once said, if you feel like you're going through hell, keep running!