Should I explain in my will why someone receives less?

An explanation can help or hurt depending on the facts, so private letters and careful legal drafting should be considered. For the issue described here, a person can often leave unequal shares or omit an adult child, but the document should be clear and comply with state protections for spouses and dependents. As part of the legal review, careful drafting can reduce ambiguity, though no plan can guarantee that a dispute will never occur. This is a situation where professional review is particularly useful when family concerns intersect with property, tax, or business issues.