@theonlywanderer There shouldn't be any problems with programming. My forum has been fine for years. If this Simple Machines forum is kept, and all is working fine, probably nothing will ever need fixing, not with the base forum program. It's added mods that can have problems if the forum program itself gets updated, but a mod is no longer compatible, or if the mod program had an error, of if two mods are not compatible with each other but ok on their own. That is an easy fix- delete the mod, or don't add any.
There is a Simple Machines help forum by the people who made this forum program, so there is some place to get some advice. The link to their forum is at the very bottom of this forum's page, if you click on the words, "Simple Machines".
Storage size is a concern. With my forum (about cats), I did not have a gallery. So if people wanted to share images, they had to have their own place to store them to then add to a post, or just upload them from their computer. Oh, but then I added a mod to allow uploaded images, though a few cat pictures don't take much storage space. My forum was not the kind where people add pictures very often, unlike this forum.