One other thing to consider is that if you goal is to keep the image up for 5, 10, 20 years, there's actually way more chances it happens on imgur than on your self hosted webserver : one day you'll be bored of maintaining it, and that'll be that. A good part of the web from the 2000' was deleted because we were hosting our blogs on our own servers, until we didn't. In an ideal world, we would have a p2p web, where content is distributed by users of the site and it stays up for as long as one person seeds it, like the Beaker Browser tried to do with dat, but this is far from what most people use today. For now, the power of self-hosting is more suitably directed at providing apps you will use for yourself than to publish things meant to stay out in the world. Unless of course you're ready to commit to that, knowing from the get go it will be a challenge.