Emissions rise because of demand, and for the past 20 years, that demand has been a result of rising economies (e.g. China), and to a lesser extent growth in the Western world (through immigration). Emissions will keep rising until that quells. Fortunately, it's projected to in 100 years or so, but ending that sooner is possible and warranted. We can achieve this with universal access to contraceptives, and by lifting countries out of poverty more rapidly.

Are you suggesting that one's perspective cannot change in 20 years or that he should kill his kids?

Rules for thee, not for me. Money is privilege and they think this puts them above the standards they wish to impose on others.