Builder's Dilemma

Acceptance of inevitable destruction.

When you know that something is inevitably going to ruin what you have done, but you do it anyway for whatever reason you may have.

A builder knows what they build won't last forever, regardless they build. Maybe it's for money, maybe it's for love, maybe they build just for the sake of it, nevertheless they do it anyway.

"Mark built a sandcastle even though he knew a wave will just wash it off at some point. One can say he had the Builder's Dilemma in mind, a Sandcastle Mentality even."