Is it Right for spouses to Declare their Income to Each Other?

Over the years, we have seen marriages split due to unreconcilable differences, majorly because of money (income) by way  of salaries, profits from businesses, interests from investments, et al. They accuse each other of not being truthful and subject their initial love for each other to doubt and distrust, then finally, go their separate ways.

Then I ask, does it mean that, if a man does not tell his wife the amount he earns as salary nor the wife, her husband of how much she makes from her business, they both do not love each other and so, cannot trust themselves?

What say you?