I am still fumbling my way through investing, but I began buying i-bonds this year. However, I keep all my retirement savings in stock funds, since I have quite a long way to go, so my reasoning for i-bonds is as follows:
1. Diversification, since the amount I am putting into stocks is finally getting somewhere
2. Hedge against inflation, which is bound to pick up at some point
3. Better than CDs for a portion of my emergency fund
Mainly, I wanted someplace to put extra cash, which I do not foresee needing in the near future, that is not as scary as stocks but at a better rate of return than a savings account. It is also my self-insurance fund for wind insurance.
Hopefully, I am doing the right thing. With all this investment stuff, I do the research, but the more I learn, the more I feel I don't know, and half the time I just have to close my eyes and jump in.