I have a weird philosophy concerning pets and animals compared to kids. Yet any real "child envy" remarks are usually hidden, and never out right voiced. Most people say "you've raised kittens and puppies, you'd obviously make a great mother" or "You love your animals so much, you should consider a child"
When it comes down to it, much to everyone's dismay, I choose to care for animals because I know the rewards are great. The love and affection you receive from a pet is unconditional. You could argue that their only affectionate because you feed them. Yet you really can't explain why some dogs and even cats love their owners even though their treated poorly. With children it's "hit and miss" there is no way to say for certain that a child will grow up and love you. As much as parents would love to believe otherwise, it just doesn't always happen according to plan. Even children who were loved, may even grow up to dislike their parents for what ever reason. Not to mention the lack of "I hate you" every time they don't get their way is a blessing.
With animals their just more honest about their affections, they can't say a word to you, but talk is cheap anyways. A child can easily say "I love you Mommy/Daddy" but somehow they don't get what they want in the very same hour and their screaming "I hate you!" at the top of their lungs. Animals on the other hand, never really hate you, they can be sad, but as far as hate goes, none of my animals has ever displayed a form of hate to me. They've always been loving, affectionate, and sweet. Which is more than I can say sometimes for parents who moan to me about how their children never come around or call.
Not to mention there is a lack of anxiety with animals, well of course we worry when we're away for extended periods of time and have left our animals in the care of someone else. It's natural to worry becuase we're uncertain if their going to get loved and treated with kindness from someone we barely know. Yet we never have to worry about them sneaking outta the house to attend a frat party. We never have to teach our animals about "the birds and the bees" or about "STD's"
Animals are just much easier to get along with becuase we never have to compromise our values. They love us however we are, and never ask us to be anything else.