I do about 6 miles twice a week during the cold months. I enjoy it.
Yes it's high impact -which increases injury risk- but those impacts also do some good. They increase bone density and improve overall tone. I also find that it improves my standing climbing and makes threshold efforts seem less painful because I'm so used to heat stress and very high heart rates.
Lastly, in my experience running injuries are pretty minor. A tender spot from overuse that goes away in a couple weeks without much disruption is nothing compared to injuries I've had from cycling. Crashing hurts.