Yes. I do ride fixed gear bikes. I have ridden bikes all my life but they usually were road bikes and race bikes. About 4 years ago I tried out a fixed gear bike and became hooked. Now I have a basement full of them in various styles and price ranges. All of them have been built by me, or converted, by me, from a road bike usage. If you love inflicting pain on yourself, you must try riding one uphill for a serious distance. They reduce the act of bicycling to the bare minimum of technology. Great sport for the not so faint of heart. And now, for your added pleasure, they are "Oh so Trendy".
John