This may mean that funds are not provided to an individual beneficiary because there are concerns that the money could be used unwisely. Sometimes one beneficiary may benefit more than another as the trustees can weigh up the needs of all the beneficiaries in the class and act in a way which can suit the circumstances.
Often discretionary trusts will last for a long time, the maximum is 125 years for trusts created after 5 April 2010. The trustees do need to act fairly and therefore it is important that the settlor chooses his or her trustees carefully at the outset and that the trustees are advised of your wishes at the outset. However it should be remembered that the trustees retain the power to make decisions and are only guided by a letter of wishes prepared by the settlor.