Seventy-two years old here. I've been riding clipless for over a year with a touch under 6000 miles since then. I fell over once the first day I tried clipless, none since then. My right hip angles out more than my left; the SPDs hold the shoe in the exact same place each time I ride. It took a bit of experimentation (and two fittings) but now each ride is fine. Unclipping in an emergency comes naturally.

Rich