Unsafe, when side walk suddenly ends, but you see that it continues after the next block and you have a choice: turn around or walk on the road and get hit by a car potentially. I live in such a neighborhood now. I can walk to work, but sidewalk ends a block from my house and there are no street lights, so it is MUCH safer to take a 2 minute drive.
It’s also that motorists are often times hostile to pedestrians. Case in point - the elementary school my daughter goes to is a quarter mile away. So I’m trying to get the second grade kid to come back home on her own. She needs to cross streets in a subdivision. There is a crossing guard to help. But still - people honk at my 8 yr old when crossing. Ultimately I’ve decided to drop and pick her up myself.