Most people dream of building a six-figure nest egg, but what happens when you've saved aggressively, invested well, and still feel like you might be doing something wrong? That was the question one 28-year-old woman brought to the Financial Planning subreddit, where commenters united to tell her exactly why so much cash in checking might be a problem. "I saw a post yesterday on Reddit that had people shocked at the idea of someone keeping $50,000+ in their checking account," she wrote. "Is this actual ...