Some people are aromantic, asexual, homosexual, infertile, have health issues, etc so can't naturally have children. Some people are unable to be there for kids mentally, emotionally, physically, financially, etc. Some dislike children. Some have jobs that don't allow them to be effective parents. Personally, I think it's more selfish for a person to bring a child into an unhealthy situation, but that's just me.
Methinks there should be more focus on addressing the issues within the Church than on criticizing peoples family situations.
And speaking of people viewing pets as family, I've always believed that any employer that offers bereavement leave should also include leave for death of a pet. A colleague of mine lost her husband's grandmother in the same year she lost her 18 year old cat. She was permitted 3 days off work for her grandmother-in-law who she had met a handful of in her life, but zero time off for the pet who'd been an important part of her life for almost 2 decades.