I can't believe I'm doing this, but I have to say something against this "anti-life insurance" business.
Life insurance is not "fearing death", or "depending on someone else besides Jesus to save you", it is merely a financial arrangement to take care of your family's earthly needs when you're gone. And your family is also an extension of the Church, since they are probably fellow Christians. Taking care of your family therefore is also Christian work. In fact I would say there are plenty of verses in the Bible which prove it is one of the most important responsibilities of Christians. But I dislike quoting verses, and I'm sure many others here can provide them.
Even if they are non-Christians, the societal norm is that you have a responsibility to take care of them. By doing so, you demonstrate a good testimony to non-Christians that a Christian is a person of good character and a good member of society, and that is also a form of missionary work. (There is also Biblical support for this.)
Don't think that Jesus has no idea about finance, or that he doesn't care about family. We are commanded to be fruitful in both areas, to spend our money on preaching the Word (growing the Church externally, through missionary work), to take care of current Church members and to multiply (growing the Church internally).
Money is needed in this world to further the work of the Church. It is not to be eschewed and avoided. If we don't generate it, it has to come from somewhere.
No, we cannot only depend on "faith" to take care of the financial needs. That kind of faith is testing God. God never intended us to sit back, hold out our hands, ask for money to drop from the sky and call that a "miraculous blessing". We are supposed to do our best and trust God to provide by turning our best efforts into something beneficial. THAT is practical application of faith.
Life insurance provides your wife and children with the resources they need to grow up to be useful members of the Church. If you don't provide, someone else has to. Probably the Church itself, since it is one of the Church's responsibilities to care for its members. So what have you really accomplished by avoiding life insurance, other than to transfer your burden to other Christians?
This isn't prosperity gospel, BTW. Prosperity gospel focuses on enriching yourself. This is about being good stewards of the resources which belongs to God, which is not just the Church offerings but also ourselves, our money, time, and effort.
Nor am I promoting any investment-linked insurance products. Investment-linked products are generally very poor financial investments.
Nothing wrong with buying life insurance, it's not a sin anyway.