Perhaps not....There is no right or wrong answer here...
However, if you want to dive with youngsters, there is a basic philosophy that should be followed when dealing with children that goes something like this:
You are the adult and the child is a child. A child is *not* a dive buddy, a child is a child.
Some children can learn to dive safely with proper supervision, but a child doesn't have the under-pressure decision-making capacity, to say nothing of physical strength (usually) to handle an adult with an emergency, especially if there's a modicum of "adult panic" thrown into the problem. (yes, there are many adults who're not competent buddies either, but that's another discussion entirely)
If you want a buddy, you must take someone with you to be that buddy in addition to the child.
If you take a child by yourself, you are not only diving solo with an extra burden of responsibility (the child), you are also, because the child cannot be a buddy, saddling that child with a burden he/she cannot bear. This is a bad idea. Don't do it.
If your child's other parent isn't a competent dive buddy and you don't have a trusted dive buddy willing and able to assume the extra responsibility of having your child along, hire a pro to go with you.
I don't say "don't let X yr old children dive," but I do say "don't take a child diving without a competent, enthusiastic buddy." And with very tight limits on depth, time, current, min vis, temp, etc., etc.
Rick