I always understood those to be "BEST BEFORE" dates and not expiration dates... pretty much everything is still good for anywhere from a day or two upwards of a couple weeks, sometimes longer, past the listed date.
... and things like bread, cheese, veggies, and the like, you can obviously just cut away the bad parts... still good in my opinion.
C&D together. You can find a ton of articles that explain that most "expiration" dates that you see on foods are actually "best by" dates. Which does NOT mean that the food is not consumable after the date, only that it is past the date in which it would taste best. If it's in question I usually just do a sniff and small taste test. I rarely let food get to that point anyways, so it's never been a big issue.
Yes, I would, at least here in Australia and depending upon what the item is. Australia's labelling rules are insane. There are arbitrary limits that do not take into account published science. For example, for medicines use-by dates of two, three or five years must be used. I deal with a range of natural medicines that are dried plant extracts that are in airtight sterile blister trays. These dry extracts could have been buried with the pharaohs and they would still be okay. Similar labelling insanity applies to food and drink in Australia. Soft drink, for example, must have a use-by date on it. Canned food, which should be good for more than a century, must have a use-by date of not greater than five years from the date of manufacture.
Depends on what it is - the best before date is an advisory, milk doesn't instantly curdle, meat doesn't rot, vegetables don't wither when the clock strikes midnight on the date stamped on the package.
I check it first. If it seems okay, I eat it. If in doubt, throw it out.
Yeah of course I have so many times. It's just a guideline, if it's still fine there's no reason not to. I remember some golden syrup that was 6 years past it's date, it tasted like treacle but it was still nice