Is investing in NPS worth it?

Should we invest in NPS if you are falling under higher tax bracket of ~30%? I am having income of 20+ LPA. I did some calculations investing same amount of money in mutual fund sip the return is much higher than NPS. What confuses me is it actually worth just for saving tax on 50k? As I only intend to invest 50k for tax purposes only.

Please kindly suggest some for your thoughts and insight.