Been looking at retirement portfolio strategies lately and honestly, there's something refreshing about keeping things simple. Warren Buffett's been saying it for years -- most people shouldn't be picking individual stocks. Just grab some solid index funds and let time do the work.

The thing is, there are hundreds of ETFs out there claiming to be "low-cost" and "passive." So where do you actually start? I keep coming back to Vanguard. They literally invented the whole low-cost index fund game for regular investors, and they still have some of the best products around.

Let me walk through three that could work really well for an IRA:

First up -- the S&P 500 play. If you want pure exposure to American business, this is it. You're looking at 500 of the largest U.S. companies, weighted by market cap. Buffett specifically calls this a bet on American business. The numbers are pretty solid: over the past 30 years, the S&P 500 has averaged around 9.6% annualized returns. That includes the dot-com crash, 9/11, the financial crisis, and COVID. A $10k investment 30 years ago would be worth roughly $158k today if you reinvested dividends. Vanguard's S&P 500 ETF (VOO) charges just 0.03% -- so you're only paying $3 per year on a $10k position. That's the kind of cost structure you want.

Now, real estate. I'm genuinely bullish on REITs as a diversification play. Real estate has income potential like bonds but can match or beat stock market returns. Plus, it doesn't move in lockstep with the stock market, which is exactly what you want in a portfolio. The Vanguard Real Estate ETF (VNQ) holds 183 different REITs -- companies like American Tower (communications infrastructure), Prologis (warehouses and distribution), and Equinix (data centers). It's currently yielding 4.8% with a 144% total return over the past decade. That's solid income plus growth.

Then there's bonds. Most people shouldn't have everything in stocks, especially as they get closer to retirement. A simple rule: take your age, subtract from 110, and that's your stock allocation percentage. So a 40-year-old might do 70% stocks, 30% bonds. The Vanguard Total Bond Market ETF (BND) gives you broad exposure to U.S. government and high-quality corporate bonds. The expense ratio is incredibly low at 0.035%. It's basically an all-in-one fixed-income solution.

Look, when you're choosing between investment management firms and their products, cost matters way more than people think. These three Vanguard ETFs give you a solid foundation -- U.S. stock exposure, real estate diversification, and bond stability. You could build a pretty solid long-term retirement strategy around them without overthinking it.