You put faith in your doctor... that he is prescribing the correct treatment.
You put faith in your spouse... that they are truthful and loyal with you.
You put faith in God and His Son... that they speak truth, and keep their word to you
You can put your faith in your doctor because you can meet him for yourself and because there is verifiable proof that he is who he says he is and is qualified to do what he says he can. The faith part is really trust. You trust that he is going to do his job to the best of his abilities while he is treating you.
You put faith in your spouse after you have grown to trust him/her enough to marry them. You can see for yourself what they are like. You trust by reason of information you have gathered yourself, that they will continue to be the same person you have come to know and love.
To put faith in God and his Son is completely based upon unprovable information. Most people would need more solid information before buying a washing machine but they base their whole life around information that is sketchy and unprovable and is highly subjetct to iterpretation . It seems more honest/accurate to say that faith is more often than not based upon a person really really wanting someting to be so because by "virtue" of faith, so much of the unknown (so far) in life can be explained away with magical thinking. Faith comes into play when one has nothing provable to base their beliefs in and don't want to look any furthur or because one needs an answer right now to lean upon and they want to feel smug and selfsatisfied about it even though they have no real proof.
For hundreds of years so much of the unknown was attributed to God. Each time science is able to explain things that were once unexplainable, there is less and less that is attributable to him. What does that say about Faith and the existence of God as we have come to understand him? Where would we be if those who made scientific discoveries would have just stuck to their faith based beliefs and didn't bother looking any furthur. JW's benefit from all those who don't just sit back and say "God is going to fix everything" but who go out and look for answers that help us now. The Bible tells us how we got here and how the earth was formed and why things are the way they are but that's not enough for some people. They need more detail before they have faith. They literally dig for information, and personally discover, exchange and share information with others rather than blindly accept what was said before. Are they lacking in faith?