Deer have always been my worst fear while riding, I feel I'm pretty good at predicting what most people will do and in those situations where I may not predict well, I usually leave myself room to get away from them. Deer, on the other hand, just seem to show up out of nowhere. Sure you can try to avoid riding during rut and other peak times but not always, and even then there is still risk.
I guess I'm seriously at risk being in my 40s, riding mostly on rural roads, riding a motorcycle between 500-1000cc, riding year round usually at dawn and again at dusk. No wonder they worry me so much.
I do wear a helmet, that should reduce my chances of dieing.
Maybe I'll just stay out of North Dakota.