If you only own one road bike, it should be geared. Single speed bikes are not ideal for riding in hilly areas, windy areas and urban areas where you are constantly stopping and starting. IOW, most riding situations are better served by a geared bike. Now, if you already own a geared bike, then a SSFG type bike can be a lot of fun. I ride mostly fixed gear, but on really windy days I default to my geared bike.
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