It is, I think, the satisfaction of both utility and curiosity, Engineering and Science, that makes the new discovery the best.

To know that this was the easiest way, and thus not diminish the discovery with futility, but yet to finally succeed in overcoming mental hardship, which is a joyous release. Not least due to the excitement in accomplishment, nor the pride of creating new advancements in aid of ethical positivity.

Or perhaps because having something that no-one else does is far too ingrained in our psyches, as a species.