There is hard data supporting vaccinating. The comment above about risk is right on.
AGW theory is based on models that are fed biased data. Garbage in = garbage out. Skepticism of the AGW theory is reasonable and safe for society. Especially in light of the sweeping and incredibly costly changes advocated by the Green New Deal crowd.
Those are just two examples. Many theories have been verified and proven to be laws of nature (gravity, thermodynamics, etc). Many theories have been disproven (cold fusion). My point is that skepticism can be a healthy thing. It's part of the scientific process.