Why do Christians so easily accept inconsistencies into their worldview? In this sense, non-Christians are much more consistent. There are no Marxist/Leninist creationists. There are no New Agers who believe in ethical absolutes. The Christian, who trusts the Scriptures and therefore has access to the one worldview based on eternal truth, should be the first person to recognise the bankruptcy of secular religious views. Yet all too often he is the first to embrace them!This seems way too common. It is most unfortunate. Christians need to love the Lord with all their heart, soul and mind. I think there are several reasons why the above comment is the case—at least within the West.
Christianity is the truth, so where other worldviews contradict Christianity they are incorrect. Many Christians subscribe to a false worldview. To a subset of this group the inconsistencies between what they believe and Christianity may not be a compelling reason to reject their false beliefs, or conversely, Christianity. While some atheists may be somewhat more consistent, there is, fortunately, no shortage of inconsistent atheists. While atheists have no reason for universal, objective morality they do not all become nihilists, or mass-murderers like Stalin who was more consistent.
Part of Christians' inconsistency is their desire to hold onto Christ in a world that denies him. They have met him and believe but have yet to allow their false worldview to be completely transformed. It is admirable they remain in Christ but they need to be made aware that Christianity demands our worldview is conformed to Scripture. What is also difficult is that they live in a culture where they are now going against the flow. Christian beliefs are currently very antithetical to secular beliefs, therefore the Christian viewpoint is actively opposed. While that may not be a lot different to what the non-Western Christians face, the Western Christians are in the position of having emerged from a Christian heritage which had a more favourable view of Christianity.
A further reason is that there are weeds within the church. Some people are "within" the church but are not of God and they promote ideologies that oppose God. Christians need discernment, though with the basic lack of a Christian worldview this is more difficult; looking at the fruit of person's lives can be helpful in this area. Weeds appear like wheat early on, but they do produce fruit in the long term? fruit consistent with being in Christ. Rank heresy should not be too difficult to spot. Unfortunately it detracts some, and there is much that is more subtle than grossly heretical beliefs.
We have a tendency to agree with data that confirms our beliefs and explain away that which challenges it. This is understandable. It is a reasonable position if you are in the truth but an unreasonable one if you are in error; the problem is how do you know which camp you belong to?
For the time is coming when people will not endure sound teaching, but having itching ears they will accumulate for themselves teachers to suit their own passions, and will turn away from listening to the truth and wander off into myths (2 Timothy 4:3-4)The answer is not to assess if data conforms to your ideas but do you conform to Scripture.
Do not be conformed to this world, but be transformed by the renewal of your mind, that by testing you may discern what is the will of God, what is good and acceptable and perfect. (Romans 12:2)