Probate courts don't grade wills on intent — they grade them on whether the document meets the exact legal requirements for a valid will in that state. A template that's missing one formality can be challenged or thrown out entirely, regardless of how clearly it expressed what the person wanted.
Execution formalities are unforgiving
Most states require a specific number of witnesses, that they sign in the testator's presence, and sometimes that the will be notarized or self-proved to skip a probate hearing. A generic online template rarely walks someone through these state-specific requirements — it just prints a document and assumes the rest gets handled correctly.
Vague language invites a will contest
Terms like 'my property' or 'my belongings' without a residuary clause, or beneficiary language that doesn't account for someone predeceasing the testator, create gaps that heirs can — and do — fight over. A will drafted by someone who knows what probate courts actually look for closes those gaps before they become a dispute.
An attorney-drafted will puts your document in a stronger position
Having a licensed attorney draft or review your will means the execution formalities, the language, and the structure are built around what your specific state's probate court requires — not a one-size-fits-all form. That's what actually determines whether a will gets honored without a fight or ends up contested by family members who disagree with it.
The cost comparison isn't close
A contested probate case can run tens of thousands of dollars in legal fees, paid out of the estate before anyone inherits anything. Getting the will drafted correctly the first time is a fraction of that cost — and it's the difference between an estate that closes in months and one that drags through court for years.