Result? The little unread monsters pile up. One by one, they show up at your door - the door you left open for them (well, you did feed them that invitation in big, bold 'blog' letters). And they wait in your living room (they are polite) for you to have a look at them.
When you finally have the strength to look at your RSS feed reader, you realise the slow poison that's accumulated in there. You can't read the group with 100+ unread posts, so you resolutely look at the ones with just 1 new post. Soon, the law of exponential unreadness kicks in, multiplying like rabbits descended from Gandhaari. It's outta control already.
You tip-toe around the reader, trying not to set off a minefield of will-read-ness. Here a click, there a click, everywhere a click-click.
And one day, when you are not paying attention it happens. It's like visiting the Tomatina festival. You click on a folder by mistake. Blast! All the feeds open. But one ohnosecond later, it's the best thing that happened to you. You know you can't read all of these posts, and there was probably nothing useful in them anyway.
As you sip sour wine from these grapes, you close the browser tab.
Images courtesy: Squeeze Toy Aliens, Tomatina