I chose physics as an intellectual pursuit. It is not a matter of opinion. It is something where many people can add to the base of knowledge. After you have an answer, it is clear whether it is correct or it is nonsense. There is very little politics associated with this.
Any physical theory is always open to challenges, and that is a wonderful aspect of science.
If somebody proposes something and you don't believe they are right, then you can demand they show you proof. An accurate theory can survive all attacks and challenges. After nine years at Bell Labs, I felt it was my duty to give back to society. When I was younger, I appreciated what it was like to be nurtured by teachers and taken under the wing of senior scientists. This is a symbiotic relationship.