Science is about finding ever better approximations rather than pretending you have already found ultimate truth.
A casual stroll through the lunatic asylum shows that faith does not prove anything.
This external worship of images has, however, been described in all our Shastras as the lowest of all the low forms of worship. But that does not mean that it is a wrong thing to do.
Life is made of our attitudes. And there are certain things that the gods oblige us to live through. Their reason for this does not matter, and there is no action we can take to make them pass us by.
Because the newer methods of treatment are good, it does not follow that the old ones were bad: for if our honorable and worshipful ancestors had not recovered from their ailments, you and I would not be here today.
God may allow His servant to succeed when He has disciplined him to a point where he does not need to succeed to be happy. The man who is elated by success and is cast down by failure is still a carnal man. At best his fruit will have a worm in it.