Alduin helped him as well, why did we kill him again?
Paarthurnax was instrumental in the killing of hundreds if not thousands of people, just because he's been chillin up on that mountain for awhile doesn't mean he won't do it again. It is in the nature of all dragons to rule over 'lesser' creatures. I figured the time of the dragons in Tamriel was over, and killing just one more dragon is a small price to pay to ensure that they were never a threat again.
Alduin helped him as well, why did we kill him again?
Paarthurnax was instrumental in the killing of hundreds if not thousands of people, just because he's been chillin up on that mountain for awhile doesn't mean he won't do it again. It is in the nature of all dragons to rule over 'lesser' creatures. I figured the time of the dragons in Tamriel was over, and killing just one more dragon is a small price to pay to ensure that they were never a threat again.