It really isn't that hard to understand though surely?
Clearly, you are not the target market for such a machine, which is fair enough. I wouldn't pay the hundreds of euros for some of the bottles of wine for sale in my local supermarket. Or the 250 euros per kg for the Wagyu steak. But I appreciate some folks will and do so because they can afford to, because they can taste the subtle differences and know that the creation time was lengthier and involved more work.
You might not be able to ride a 6.8kg climbing bike with the best quality components for durability up the Alps but others can. Some of them want to get up those climbs as fast as they can and beat their previous times. Some of them will pay for the marginal gains that 6.8kg bike with more exotic materials that involved greater research to produce and advance their personal best times by seconds or minutes, as the case might be, over their less light 8 or 9kg bike. Same engine. Same course. Different times due to...the bike.