What is the point in having so much debate and discussion in the Parliament

What is the point in having so much debate and discussion in the Parliament when we know that the view of the ruling party is going to prevail?

Though, the view of the ruling party prevails in Parliament, even then we should have debates and , discussions. Because this helps to bring out the positive and negative points of die. issue under consideration.
The positive aspects might be adopted by the ruling party and similarly, negative aspects could be omitted even if the entire bill is not changed.
To give the information to the public regarding the topic for a particular decision which is going to be taken by the ruling party, debate and discussion are necessary in the Parliament.
Also, it is not certain that the ruling party is open to ideas and discussions which might influence the ruling patty to adopt new ideas. Thus, open debate and discussion are essential for democracy.