What a good question! I wish I had CareerVillage.org when I was your age!
I had the same question when I was young. My parents were immigrants and they wanted me to a doctor or lawyer. I chose to work in nonprofit straight out of college because I wanted to help other people gain access to better education opportunities.
My best piece or advice is that you should follow your passion. We have one life to live, and if you feel like you want to help people through nonprofit work, I think your parents will eventually see you are doing good in the world and support you.
It took me a long time (maybe 5 years after college) for my parents to really support me and be proud of my career choice, but I don't regret it for a second. Now, they are so proud of me because they see how my work helps create education and economic advancement opportunities for other minorities .
It also took a lot of discipline to live in new york city and work for a nonprofit, but I felt the lower salary was worth it for the opportunity to help more people.
We need more people like you in this world (now, more than ever)! Nonprofit work is really important!
Keep going and know that there are lot of people cheering you on!