It's not uncommon for kids or teenagers to romanticize adulthood and think it's one big party all the time — at least, that's what I thought. But alas, we're all just collectively winging it and hoping for the best. And that's not the only surprise about adulthood, either. Recently, Reddit community members shared the difficult truths about adulthood (and life) that no one warned them about, and it's a whole can of worms. Here are some of the hardest things people had to accept: 1. "One truth about adulthood that no one warned me about is how lonely it can feel, even when everything seems fine. You have to learn to be comfortable with yourself and find meaning in the small, everyday moments." 2. "Adulthood taught me just how horrible people are.…