BTDT: What should I do with the free formula I received?

everchangingcycles

I fully intend on exclusively breastfeeding. I understand that it's good to go into it knowing that it's hard as hell, freaking complicated, huge learning curve, etc. 

Well, we received some Enfamil formula in the mail (Not sure how they got my address or decided I was a good candidate for free formula). I've thought of donating it, but then again, thought well, why not keep it "just in case."

Would it be better to keep it just in case, or does that just become way to tempting, and it'd be better to donate it? Just looking for thoughts, opinions, advice?