Depending on the situation, some people absolutely need a trust. If you have a child receiving disability benefits and you have them named as a beneficiary this could interrupt their benefits. Another example of where a trust may be beneficial, is if you are concerned about an heir not utilizing their inheritance wisely. Other instances for the need of a trust could be due to the size of an estate, concerned beneficiaries will disagree about use of assets, want to avoid probate, etc.