It took me a year or two to become comfortable and confident enough to ride alone. Now, I enjoy that.

But I also agree with michaelwlf3's comment about some rides being a group of individuals who just ride in the same direction. I enjoy group rides, too, in part because I like helping new riders, on group rides, as they enter the learning curve: neither good, safe riding habits nor some elementary mechanical knowledge is inherent, and people have to learn these things. Experienced riders tutored me, and it's nice to pass along helpful information.