Women in that age group, who ingested more caffeine (about "two to three 8-ounce cups of coffee" each day), had a better chance of avoiding dementia or other "cognitive impairment" when compared to those who had less than the average intake.
Of course, this doesn't mean that a crazy caffeine addiction necessarily prevents dementia, but it didn't hurt. The results of this study supported others on the topic that suggest caffeine could slow the effects of age on your brain.
Scientifically speaking, this study doesn't really apply to you if you're under the age of 65. But since you know it'll come in handy, keep nurturing your caffeine habit. (Just not to the extent that you burn out and start hating coffee by the time you're 65.)
If anything, this means you should start varying the ways you drink caffeine so you don't get tired of it.
Okay, fine. This has been a roundabout way to tell you to start worshipping at the alter of Pumpkin Spice. Do not fight it.