If I didnt ride alone I wouldnt get much riding in. It has gotten so bad I almost can't stand to ride with anyone. Seems like I am either holding my horse back out of their butt, or constantly having to stop and wait. That's if I can ever actually get them in the saddle. Don't know what it is about women (almost all of the riders I know are women) but they seem to have a completey different view of time than I do, When I say ride out a 10, that means ride out at 10, not come dragging butt into the parking lot at around 11.
I do know about the safety aspect though. Even though I am getting borse with it, during the week I usually ride at a nearby federal park that borders an Army base. Even though you are alone, you are never really alone. There are enough joggers coming by that you probably wont lay there and bleed for long.