I think as you get older, you realize there's always going to be critics. Critics are going to win every time because they can change their critique based on the stats and their own personal feelings. It's less about proving people wrong, the critics wrong, and it's more about challenging myself to keep this level up.
The nuclear approach I'm involved in is called a traveling-wave reactor, which uses waste uranium for fuel. There's a lot of things that have to go right for that dream to come true - many decades of building demo plants, proving the economics are right. But if it does, you could have cheaper energy with no CO2 emissions.