Hi Diki
Calm down, I see your point and most instruments of a few years ago had this feature as standard. (If memory serves correct the first manufacture to incorporate it was Wersi in 1982, with the CX1 rhythm unit that was fitted to there analogue organs)
However you must remember that up to a few years ago, memory was very expensive, and as a chord sequencer used very little memory it was ideal.
Memory these days is quite cheap, so there is plenty of capacity to fit a full blown sequencer, which can record everything you need, and so this effectively makes a chord sequencer redundant.
Enjoy whatever you play.

Bill