Another solo walker here. I like the freedom to choose the route, choose the distance, and choose how long to stay out for. I am happy with my own company having lived alone since I was 18.
I did go out a few times with two walking buddies, both male, but they walked so fast, chatted together, and I felt like I was a spare part. I have met up with a female friend a couple of times, that was good because we get on really well. We will probably do it again, one walk every couple of months or so is fine for both of us.
ilona