If the NWT is a corrupt Bible, why do studies eventually give up their personal one for a NWT copy?

It is because the NWT is known worldwide to be the most accurate translation available. All errors and punctuation have been corrected and restored and most important, Gods name, which appears almost 7,000 times in the original scriptures has been put back to its rightful place. I wouldn't trust any version that takes out Gods name of all things!