A reasonable question to ponder. There could be many ways/perspectives of looking at that.
"And when — if ever — is it right to inflict another resource guzzler onto an already-guzzled world? What's more, our children will have to live in this resource-guzzled world and, if some of the climate trends are to be believed, it might not be the nicest place to live. For Rieder, this view is summarised by a comment made by a New York Times reader, who wrote: "I love my children so much I didn't have them.""
http://www.abc.net.au/news/2018-02-04/philosophy-parenting-is-having-a-baby-unethical/9382564