Why should one take his first attempt seriously irrespective of the fact how many attempts the candidate has?

It is not completely true that every aspirant should have their experience from their initial attempts to crack the exam later. Everyone has access to the previous question papers and syllabus patterns and other resources, so it doesn’t make sense that the experience from your first attempt is absolutely necessary. Of course every attempt teaches you something new but this mindset will push you back more than it being an help. So it is necessary that every aspirant should take their first attempt as seriously as their last. How good you gave your first attempt will make you that much more confident in going for the next, which eventually leads you to being more ready for your exam. Giving your all and being positive for every attempt is what makes you different from the rest.