If you’re lonely and uncomfortable in your own skin in every day life you’ll bring that into the woods.
I prefer backpacking solo. Because of the length of the trips and miles covered it’s difficult to find someone who can keep up and get the time off. I’ve tried hiking with people during the day but I wind up talking to them and ignoring nature. I’d rather socialize at the end of the day with like minded individuals.
However I will hike with friends on weekends instead of doing the same trails over and over solo. And I tend not to do trips during the winter because of the extra hours in camp.
I also prefer to get up and out before others to have summits, viewpoints etc all to myself before the crowds arrive. I can appreciate others’ love of nature without being there with them.