Chemicals from petroleum products are really messing us up. After 1972 there was a sperm and fertility decline in males of -1.16% per year. Since 2000 the rate of sperm and fertility decline is -2.64% per year. The rate of decline per year had doubled.
Phthalates (soft water bottles, skin products, air fresheners, cosmetics, scents, perfumes, et al.) are part of this problem. If a pregnant woman is consuming Phthalates and has Phthalates in her environment, her baby boy is not only going to have less testosterone during their life, thus being a more feminized male--but they will also be a male with lower fertility and a shorter life span. And, this is permanent. This genetic damage is permanent--your bloodline has been damaged permanently.
So, if you think you ever want to have a family, you've got to start taking measures now.