[Reincarnate]

There is a difference between comfortable playstyle and optimal performance.

Some people are really comfortable playing DDR without the bar, but it's hard to argue that you'd be better than if you learned how to use it.

Some keyboards will have physical barriers to them that make them unfit for certain things.

Every keyboard I've ever used has died at some point due to excessive SM-play. Letters wear off and become blank, and eventually a few keys pop off during an intense jack sequence. Some keys just break altogether (I cracked a D in half once).

Some keyboards are better for speed/dump files. Others are better for MA.