In my experience that's frankly hogwash. There is a reason that, for centuries, the price of black pepper was fixed at the equivalent weight in pure gold
Now we keep a fairly comprehensive herbarium and a very good store of spices
Herbarium by British Red, on FlickrThat being said stored items will not last forever. Some items are impossible to produce here (e.g. cinnamon), some are easily foraged (horse radish for example) and some are stupidly easy to grow (e.g. mint). Beyond those items though there a range of things we can grow, and seed save, and produce for ourselves. I think that's important. Wood pigeon for example is, on its own, a slightly earthy and inferior meat. However flash fry it with an oriental sauce, bean sprouts & spring onion and that stored rice has a purpose!
Now any of us can grow Spring Onions they breed true, produce a lot of seed reliably and can be grown in any old pot or container. They over Winter brilliantly too.
Spring onion by English Countrylife, on FlickrGarlic is simple. Push sone cloves in the ground in September, hoik them out again in June, keep the best, replant
Garlic by English Countrylife, on FlickrChillies need heat but we grow them happily in unheated greenhouses and on Windowsills. Some varieties (e.g. Apache), have a lovely compact shape
Chilli plants by English Countrylife, on FlickrOne that I've not, yet, successfully grown is root ginger. It would be a fantastic addition to oriental dishes and sweet dishes - even ginger beer! I'm trying again this year though and I'm determined to do it We've got germination - its now a matter of producing a decent quantity of root!
Root ginger starting by English Countrylife, on FlickrIf I can sort the ginger, it will be soya sauce next
Do you grow anything spicy?