This thread is just a reminder that there are newer more modern bikes and trikes that move beyond the DF bike that was invented in 1890 or thereabouts. People shouldnt be hidbound at defending what is pretty much an antique, with probably the exception of mountain bikes. People should not use something that can damage them physically. I would point out that the threads I post on this subject is no where near the number that are posted on how DF seats hurt or has caused physical damage.