You're not paying a fuck ton of money. Canada Post is a separate entity from the government and is a self-sustaining business that receives no money from the government.
Unsolicited commercial mail is paid for by the company sending it. All mail is paid for by the people sending it. It doesn't cost you anything to receive it. And when it really matters, like those "rare" correspondence that contain your drivers license, or insurance slips, or your health card, or your doctor's appointments, or even your small parcels from eBay, I'm sure you want those as soon as they come in. You should care about regular mail delivery. Because once you lose it, it's never coming back.