Why are there so many rules in parliamentary procedure about how motions are brought up and recognized?

A parliamentary procedure has so many rules so as to carry out its main goal of reaching the best decision without bias.

If motions are brought up and are directly recognized without rules, do you think everything will be deliberated properly?

The organization strictly follow parliamentary procedure in order to reach a group decision with the least conflict. Therefore, everything can be narrowed down to "peace and order".

It's all for peace and order.