Your post reminded me of an "Aftermath" column in Flying (Aftermath is a monthly column which examines a fatal accident to see what caused it and to provoke the reader into thinking what might have been done differently.) The writer made a tremendous understatement, IMO, in saying the weather forecast for the night in question was probably "the most daunting" forecast this pilot had ever seen - a solid line of thunderstorms with numerous reports of tornados on the ground. Anyway, the pilot (and his trusting passengers) took off, attempted to navigate through, and were never heard from alive again.
The most telling part of the story was that the NTSB, in their report, included part of a written report they had obtained from another small aircraft pilot who had filed a flight plan along a similar route. This pilot had heard the weather report and told his passengers they weren't going back to Florida that night. Instead, they went to a motel, got up the next morning, ate a leisurely breakfast, filed a flight plan, took off and "were never in cloud" the whole way.

"Get-there-itis" can be a fatal condition.