So glad to see this post. I've seen your posts about the fistula situation, and we're similar ages, I don't know... I feel a lot of sympathy for what you're dealing with but it's a relief to see that in spite of it all your quality of life is still pretty great (not to mention your attitude! so important)
I'm the same way about my ostomy supplies... my takedown is 10 days from today and I just placed a re-order for my monthly supply... Why? Don't know, I definitely already have enough to get me through the next ten days... Just superstitious like you I guess.
In a similar vein, after my surgery I tried to donate all of my factory sealed UC meds to my GI's office to be given away for samples (loads and loads of huge bottles of 5ASAs, Rowasas, Canasas, etc). My GI told me I should hang onto them "just in case" -- not a fun thing to hear coming off the high of a successful colectomy!! So I've got all that stuff too in addition to boatloads of pouches and wafers.
As an aside though, ostomy supplies have an expiration date. If they're still good, you might want to donate them so they can be of use to someone before they expire
Does altruism override superstition?