@adrian009 To answer this question I first had to get an accurate definition of the term.
"The word fundamentalist is used most often to talk about religion. As an adjective, it describes a very strict, literal interpretation of a religious text or set of beliefs, and the noun means a person who holds those firm, often extreme, beliefs." (Google)
On that basis we have to ask...."what is the point of having beliefs that you don't uphold wholeheartedly"?
If one is a Bible believer and hence a believer in its author as the Creator of all things, why would anyone doubt what it says, regardless of what others think?
From the Christian perspective, Jesus said that we must
'love God with all that we are, and to love our neighbor as ourselves'. God and the Bible are inseparable to us...or they should be. A half-hearted excursion into anything produces no commitment....no one can respect a person whose beliefs are 'wishy-washy' and may be swayed by the least whim or fancy (James 1:5-8).......on the other end of that spectrum however, is an overzealous attitude that tries to force extreme beliefs on others under threat of damnation.
Taking Jesus as our exemplar, we see that he offered his teachings to people on a "take it or leave it" basis. Belief is personal and should be left up to individual hearts.....but at the same time our choices should be informed ones....that includes being mindful of the consequences of our choices.
Paul said at Romans 10:13-15...
"However, how will they call on him if they have not put faith in him? How, in turn, will they put faith in him about whom they have not heard? How, in turn, will they hear without someone to preach? 15 How, in turn, will they preach unless they have been sent out? Just as it is written: “How beautiful are the feet of those who declare good news of good things!”
Remember that Jesus' apostles preached to their fellow Jews exclusively at first, so it wasn't like their countrymen had no knowledge of God....it was because their religious leaders had taken them so far off track that the Jewish system no longer led anyone to God. Jesus was sent to show the "lost sheep" the way out of that corrupted system....into a new pen, with a new Shepherd, and a new covenant.
From my own experience, having studied the Bible and engaging in this work commanded by Jesus for most of my life, I find that when the Bible is being literal, and when it is being figurative or metaphorical, the context is what allows the reader to distinguish between the two. Those who have a thorough knowledge of the Bible have no difficulty distinguishing between them. Understanding original language words clarifies translation and identifies bias in translation.
JW's are often accused of being Fundamentalists, but we are just dedicated servants of our God and his son, fulfilling our commission to preach Christ's message to those who want to hear it. (Matthew 28:19-20)
If that is fundamentalism...then guilty as charged. I have had wonderful conversations with people of many different faiths in my ministry. No one is forced to accept our message but many have commended us for the fact that we are out there doing it when most others are not. One can understand how difficult it is when others have opted
not to engage in it. (Matthew 10:11-15) Christ said he would back this work.