I only sacrificed sleep a bit in the first 3 years until both my kids were sleeping through the night. In no time they are school age, then off to university. The people I often see represented by the women in the comic are those who are married to their jobs, not parents. If you don’t want kids, fine, don’t have them but many parents think their kids are one of the best parts of their lives. Things that are the most worthwhile in your life often take a bit of work or challenge.