Wonderful post, SheFly...you illustrated just one of the many reasons we ride. 
I rode by myself after work last night. Thought I'd be riding with DH, but he did a long ride earlier and wanted to take Paisley to doggie play time in our apt. complex, so I rode for an hour and 10 mins. all around by myself and just felt so free. I like riding with DH and others too, but sometimes solo is so rewarding. I can go slower when I need to, and push hard when I want, never having to worry about pushing to keep up with someone or slow up if they're lagging. I can turn down different roads just to explore, and I can look at flowers, birds, houses, and other things along the way.
It's a very zen experience indeed.
Emily
2011 Jamis Dakar XC "Toto" - Selle Italia Ldy Gel Flow
2007 Trek Pilot 5.0 WSD "Gloria" - Selle Italia Diva Gel Flow
2004 Bike Friday Petite Pocket Crusoe - Selle Italia Diva Gel Flow