Why? The airline is not in control of the weather. The pilot did the prudent thing in not trying to force a landing in bad weather. The passengers should thank the pilot.
I flew to Toronto in January in 2005 and we did 5 passes at the runway in a snowstorm. I am usually good on planes but that time I was gripping the armrests hard. People were crying in the cabin as the plane came in sideways and the then throttled up and at a 45% angle. Scary stuff. Pilot apologized profusely afterwards and came out to greet everyone leaving the plane.