atakan/iStock via Getty Images Introduction When it comes to long-term investments, I mainly buy companies that fulfill critical roles in the modern economy. This includes transportation companies, healthcare, defense, financial services, energy, and related. I also try to find a sweet spot between growth and value, as I am neither a pure-play "growth" nor "value" investor. Hence, my portfolio, more often than not, has a yield between 2.5% and 3.0% with an annual dividend growth rate in the high-single-digi ...