If you do not consider the problem at all, you have not made a decision on it; any more than you have to make a decision about, say, the most aesthetically pleasing perspective of Olympus Mons for prospective Martian colonists.

The actual point stands, either way: Whether you do not make a decision, or you decide not to act, the outcome is the same--and it is often a better outcome than the result of reactive or proactive decision-making.

What if the decision is to not do anything because the event is so unlikely to happen again that it isn't worth the cost to fix.