Almost everything that goes in the bin ends up in a landfill site, crushed underneath tonnes of other rubbish, and trapped away from the oxygen in the air. This is important because It means that all that organic waste will be broken down anaerobically, by those microbes that thrive in the absence of oxygen. They take in your waste food and produce methane.

If your waste ends up being composted, it is broken down aerobically, by those microbes that thrive in the presence of oxygen. Instead of methane, they produce carbon dioxide.  Measure for measure, methane is about twenty-two times as damaging a greenhouse gas as carbon dioxide. It is far better for your food waste to go on to produce CO2 than to produce methane. (Obviously, if we could all produce a little less kitchen waste that would be even better.) You also end up with compost, which is rich in nutrients and invaluable for fertilising soil.

So if your council insist on collecting your kitchen waste separately, and your garden waste, go along with it. It's a good thing. If they don't, why don't you find out a little about composting and do it yourself?