I'm not going to lie... Sometimes I plain forget, and sometimes I don't think straight... or rather yet... sometimes I'm feeling naughty and just can't help myself! lol
ie. We were having raw clams on the half shell...and I wanted some... I ate about half a dozen of 'em... and realized... that's a big no no!
Then one day, I really wanted a Vietnamese hoagie... and after I finished it.... realized... it had pate in it!
With cold cut deli meat, when I buy it, I'll eat it the first day, when it's still "fresh" but after that, even though it's been in MY fridge, and stored properly, I can't help but notice it gets a bit... "slimier" then when I first take it home, so I just feed it to DBF instead... lol
Or every now and then, I crave a nice delish Italian Sub from this place near by that is VERY famous for their Italian Sub (I'm talking about, line out the door on the weekend, and round the block in the summer time.), so I know their deli meat is constantly fresh, I will indulge myself.
I say, every thing in moderation! If you happen to eat it, don't stress about it! If you can avoid it, wonderful! But... here and there isn't going to hurt... you can't be that careful or you may as well enclose yourself in a bubble!

Enjoy!