Hello Rachel and welcome to SF.
Most of your post is questioning why God hasn't healed people. I used to be a Christian and I now realize that God doesn't spoon feed us. As for healing, we are made in His image which is the physical body. In it we have energy vortexes/centers popularly called chakras. Since we are born with it, I think God would expect us to use those to improve our health.
In my signature line, part of it says to speak to the earth to learn from it. That learning has happened with crystals and they can help develop our chakras.
There are threads in the forums that discuss chakras and crystals. There is also a lot of material concerning those two that can be found on the net and in books.
I hope you enjoy your stay in SF and find the answers you seek.
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"The Children of God were moulded by the Hand of God which is called Awen..."
The Kolbrin Bible, chapter 5, vs 1
"But ask now the beasts, and they shall teach thee; and the fowls of the air, and they shall tell thee:
Or speak to the earth, and it shall teach thee: and the fishes of the sea shall declare unto thee."
Job 12: 7 and 8 (KJV)