Why can't we just have combo chains?

[Arohk]

If you find yourself never pressing combo buttons out of order, congratulations, you're playing that part right. If you ever do find yourself pressing things out of order, your response should be "I need to practice this," not "This should be reduced to one button."

It should be one button because there is no reason to use the skills otherwise, there are two abilities i can't use at all if not combo chained, so they just eat up two slots for nothing.(i literally can't use the skills, so there is no window for error!)
Instead of making it awkward or clunky to play the jobs, the bosses should be more difficult, have to put more focus on what skills i push in the right order than what the bosses are doing.
Why do you defend a badly designed and outdated system?

I tried to get two friend to play along with me, but they both quit because they found the combat so slow and awkward. , i pretty much continued because was interested in the story and all the nice easter eggs and Final Fantasy references of the games i played. The game often brings a smile to my face and this change would greatly improve the game.