You buy a simple little device, about 3cm long and 2cm wide. Blue. Maybe 2mm thick. It isn't cheap, but not terribly pricey. All you want to do is take more photos with your digital camera.
But then, you realize you need a high-speed USB port to upload your photos faster. After all, now you have more photos stored on the memory card. And they're bigger, because bigger photos are better. So they take up more memory. So you need a computer with more memory. And Photoshop, too, so you can tinker with your photos. And actually, now that you're going to take so many photos, shouldn't you really invest in a high-quality digital camera to make it all worth it?