Now that I'm back in front of a computer instead of a phone, I looked up: https://www.bankrate.com/investing/annuity-calculator/ https://www.bankrate.com/inves

Now that I'm back in front of a computer instead of a phone, I looked up: https://www.bankrate.com/investing/annuity-calculator/ https://www.bankrate.com/investing/annuity-calculator/ It suggests that for an annuity with a 2% annual growth (which at least maybe approximates "flat real rate of return,") for 30 years, it'll give you about 3.7%, not 5%.