As
@PUSH mentioned, there's still quite a few people who write checks (that's cheques to you!). I don't carry them around with me, but I do use them once a month to pay my regular monthly bills.
Whenever I go to the grocery store, I usually see a few people at the register who write out checks. I'd rather just go to my bank's ATM and get cash beforehand, and pay that way, but that's just my preference. I flat out refuse to use a debit card linked to my bank account. I only use credit cards for larger purchases. There you have it. More information than you or anyone else cares to hear about!