This is not to say that ATC or our operations center hadn't been responsible for a cancellation, but rather that none of my flights have required me to just say no because of weather conditions. Why? In most circumstances, offending weather conditions will eventually pass if the departure airport is affected. An airliner is able to escape the weather at a relatively quick pace. And for the destination airport, conditions usually change by arrival; if not, a diversion decision is made. En route weather dangers are most always convective. If contingency fuel is included, circumnavigating a convective environment at high altitudes is rarely an issue. So, if I am eventually departing regardless of conditions, why should I even consider a detailed preflight weather review?