(Investing) "The Everything Store" for Your Money: Building a Single-ETF Portfolio

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Modern investing can feel overwhelmingly complex, with thousands of stocks, bonds, and funds to choose from. This leads many to analysis paralysis and inaction. This thread is a deep dive into the powerful philosophy of radical simplicity: the "one-fund portfolio." We will explore the viability of building a complete, globally diversified portfolio using a single Exchange Traded Fund (ETF), such as Vanguard's VT (Vanguard Total World Stock ETF) or one of BlackRock's AOA/AOR/AOM/AOK series (All-in-One Asset Allocation ETFs). This approach automates diversification and rebalancing, dramatically reducing complexity and the potential for behavioral mistakes. We'll analyze the pros—simplicity, low cost, and market-cap weighting—and the cons—lack of control over specific allocations and tax inefficiency in a taxable account. This is a space to debate whether this elegant, simple solution is a sophisticated masterstroke or an oversimplified compromise.