[Not a teacher]I quarreled with my friend Michael over the issue about whether rich people should share their money with poor people. He maintained that rich people had contributed a lot to society such as creating jobs and (– there are only two items in this list) paying tax, while I considered that poor people needed their help and as a human being, (Are you referring to yourselves as rich/people who should help? If not, you should say they) had the responsibility to help them. Even though no one won in the end, I learned a lot from his perspective (I might say "his arguments" – "his perspective" doesn't sound natural).
Student or Learner