I much prefer to walk alone and while I think there will always be risks, there's one guideline can help prevent falls, which is: When you're walking look where you're putting your feet. When you want to look at the view, or at a plant or anything else, stand still.
I know someone who had a very seriously broken leg from falling about a metre off a pretty good track - how did this happen? She was busy talking to the friend she was walking with and not paying attention to the track. So not having someone to talk to can actually help us to be alert and watch where we're stepping.
Walking through the Pyrenees was one of my best experiences, because there are so many villages it wasn't necessary to carry a lot of food or camping gear as it often is in New Zealand.