During COVID I have ridden almost exclusively solo, including a short tour this past summer. I may have offended a couple friends by ignoring their requests to ride.
In non-pandemic times, I generally prefer to ride solo because there is nobody to protest to unplanned side-trips or activities, like going for a swim or stopping for poutine. Also, I often plan open-ended rides where I might chose a gravel road or hike-a-bike across a beaver dam, and my roadie friends might not be in to that.