I like physics, because it's just fun, I get to find new things, and learn new things every day on my own and that excites me about waking up every day. Below lies the content that can motivate someone to pursue research and can your questions on why anyone pursues research, especially in physics.
Must watch/read content for Physics enthusiasts
P.S : While watching, exercise caution. You might fall into a black hole called physics, never to be heard from again.
Feynman on how anyone can be a scientist
Feynman on knowing vs understanding
Carl Sagan's famous Pale blue dot speech
Andrew Wiles on solving Fermat's Last theorem
Yochiro Nambu's advice to his student
Bob Henderson reflects on his journey in physics
Four Golden lessons by Steven Weinberg
Feynman's letter on "What problem to solve?"
Documentary of Richard Feynman's life - The Fantastic Mr Feynman
Beauty and Consolation by Steven Weinberg
Beauty and Truth in physics by Murray Gell-Mann
Memories of a theoretical physicist by J Polchinski
Documentary on Discovery of Higgs boson at LHC
A beautiful video on one of those most successful theories - The Standard Model
Must watch/read general content
Muhammed Ali's famous speech
Abdul Kalam's speech on handling failure and success
"We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the universe. That makes us something very special"
- Stephen W. Hawking