OP isn't exactly correct, there is coding and noncoding DNA. Coding DNA makes proteins, noncoding DNA doesn't, but it plays the vital role of gene regulation and expression, codes for all the RNA produced in our cells, and includes all the introns for coding genes. So you can't live without noncoding DNA.

However, there are plenty of paradoxes that first arose, like how closely related species have vastly different genome sizes. Turns out they had roughly the same number of genes, just huge variation in repetitive DNA. So, along the lines you were thinking of, if there's even a .00001% error rate of transcription or mutation and all of your DNA was 100% necessary for survival, there's no way you could survive or reproduce. So large genomes actually end up requiring more and more repetitive DNA to hedge the odds.

How much of the world economy or your life do you think would be possible without the chemical industry?

It's essentially saying "Let the market decide", which isn't the worst idea considering the computational power of markets. Just look at LGBT/racial representation in media. That's a decision made by the market. Me too movement also ushered in quite a bit of change with pressure from the market. It's not morality by fiat but by the distributed intelligence of the market.