Now, I know what you're thinking: what's the worst that could happen? Well, let me tell you - if you leave your cake out for too long, it can become a breeding ground for bacteria. And trust me, you don't want to eat a cake that's been colonized by bacteria. It's not pretty, folks.
Can You Leave a Cake Out Overnight? [Tips for Proper Storing]
And then there are the pests to consider. If you leave your cake out, you might attract ants, cockroaches, or even rodents. Not exactly what you want in your kitchen, right? So, it's better to be safe than sorry and store your cake properly.