I automate all of my bill payments. Otherwise, I might forget to pay one or two and end up paying late fees, having service cut off, etc.
My parents were terrible about paying bills on time, and we got evicted at least once before they simply forgot to pay the fucking rent on time.
Before this was possible, I'd sit down on the last day of every month with a stack of envelopes and stamps, and I'd cut the month's checks so I could drop them in the mail a week ahead of time. Luckily I didn't actually have to mail the rent check; the landlord lived downstairs.