The whole point of Fair Trade is that farmers in developing countries aren't being exploited by large corporations, but are being treated fairly and using their land well. It means we might pay a bit more for the pleasure of indulging in their products, but isn't that better than decimating their lands and families? Unfortunately, a lot of big name tea, coffee and chocolate companies are more concerned with getting their commodities at the lowest price than they are with ensuring their producers are being treated fairly. I don't know about you, but I can't support injustice like that. I'm willing to pay a bit more (and perhaps cut my consumption in half to afford it) so that there's no "slavery flavour" in what I eat.
If you want to know more about Fair Trade and the good things happening in Canada in that regard, check out www.fairtrade.ca, and buy Fair Trade whenever possible. If it's not possible where you live, ask for it. We consumers have the power to effect change, but sometimes we have to speak up and act for that change.