As a responsible husband and father you would never be in similar conditions in your 30' coastal sailboat. The Concordia was making a passage through known bad weather and got caught in a microburst.
When you say microburst, you may as well think tornado, because that's what the aftereffects of one look like. Microbursts can generate 60-120 MPH of sustained wind force straight down. Few boats can withstand being held down that long without taking on enough water to swamp them.
Be prudent about the weather: don't sail in thunderstorms!