Conclusion: Divide and Conquer
While putting all the eggs in one basket has worked for exceptional stock pickers, real estate investors and other specialists, most people benefit from diversifying their portfolios away from a single type of investment. It is extremely unlikely that you'll own all of these investments at the same time, but a well-diversified portfolio doesn't need to have everything, but rather a mix that suits your investing needs. As your needs change, so will your tools. You may find that stocks are for your salad days while treasury bonds and annuities keep you warm in old age. That's why it's important to be aware of what's out there already and what new financial tools are being created - even if they're not the proper investment for you right now, they may be in the future.