Sure its important lets have a look at just one of the reasons why it is important.
Mar 7:13 Making the word of God of none effect through your tradition, which ye have delivered: and many such like things do ye.
Traditional doctrines teach Christ was 33 when crucified, but is that what God’s word really tells us or is that making the word of God of none effect? If we can prove from Scripture and history that Christ was 40 when he was crucified then wouldn’t the traditional teaching be making the word of God of none effect, because people ignore what the word tells us in favor of tradition?
If we can prove that just one of the things traditionally taught is in error then shouldn’t we examine all the traditionally taught doctrines in light of Scripture to verify they align with Scripture? And when we find traditionally taught doctrines that don’t align with Scripture, shouldn’t we then set that teaching aside and search for the truth?
2Ti 2:15 Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth
Are we doing as 2Tim2:15 tells us when we blindly follow traditionally taught doctrines with out verifying if they are Scriptural? I don’t think so!