the eternal question...why?

i figure that i should answer the question..."why a single speed?" for anyone who is new to the single speed or wanting to get into it. any single speed website that you go to will have an answer for this, but just to make it convenient here.
any one single speeder will have a different answer to this; just like religion to the answer of "god." so here is my answer...
it's the idea of simplicity. you only have one gear and you have to use it no matter what comes your way. not only is it fun, it is a challenge. man cannot live on bread alone. in this regard it is a great training tool. it brings you back to the basics. pedal rotation, the perfect pedal stroke. momentum. then if you remember the pain and suffering on your single speed you are able to apply it to your geared bike. there are many different concepts of what a single speed should be...rigid or suspension fork? disc brakes? just build a bike up from spare parts that are hanging around? all of these are valid.
i bought my single speed off of a good friend of mine many years ago. he had it at one of our little c-cross races, and after the race i took it for a spin and fell in love. the frame is a Voodoo Nzumbi, and he put old parts on it that were lying around the shop (he worked at a local bike shop at the time). anyway one day he told me that he wanted to un-load it, so i took it off his hands, and took everything off of it and built it up from the frame. i've got a rigid fork and a suspension fork for it, a 16 and 20 tooth cog.
remember the idea of simplicity that i spoke of earlier only happens when you are riding...not when your thinking of setting it up. what type of riding do you plan on doing? off-road? on-road? short travels? long travels? how bad are the hills? its not like riding a geared bike and just going. there's a lot more things to think about, but that's the simplicity of it all. there's complexity in simplicity.