There is no "gaming the system" in Darwinian evolution. You reproduce or you don't. There's no way to fail reproduction and still perpetuate your genetics.
It is common misconception, but evolution does not happen at the individual level, but on populations, so a single individual not reproducing is irrelevant, as long as the local population carrying the same genes do successfully reproduce.
Consider the plumpest cows whose carcass has been noticed, then subsequently cloned.
Sperm bank
That is not true. There are plenty of ways not to reproduce and still to perpetuate your genetics. For example, if you don't have children of your own, but support people that have similar genetic traits to your own.