I am fairly certain that none of these reasons are why you do not LOVE the movies. The "first three" are not a hero's quest. They are about how a person becomes a villain. As such, they are not really fun.
Starting with Yoda saying that Anakin is too old, we are left to wonder if a child that young can already be too scarred by slavery to train as a Jedi. We watch while the soon to be Emperor arranges for Anakin to hold his dying mother. We watch Anakin's horrible reaction. We watch Anakin decide that HIS child is more important than all other children.
These are movies meant to cause discomfort.
Perhaps you are missing the lesson. Someone once said, "Give me a child until he is six and he will be mine forever."
Personally, I think the world would have a lot fewer villains if EVERY child was greeted by parents with great joy. Each child deserves loving parents, a home, enough food, an education, an opportunity to earn a living.
