Firstly, you have the power to choose! You get to decide who are your beneficiaries and what your beneficiaries get to inherit from you.
Secondly, a Will, especially a well-crafted Will, can minimize conflicts amongst your loved ones. Nobody can then argue to say they should be getting more and the other should be getting less. The Will is there, in black and white.
Thirdly, your beneficiaries get to benefit more if there is a Will present because they will be able to avoid higher legal costs or delay to legal proceedings where there is no Will.
When a person passes away with a Will, a Court application for a Grant of Probate is required. However, where there is no Will, a Court application for a Grant of Letter of Administration is required, and this will involve more work to be done by the lawyers which in turn leads to higher legal costs.
As such, it definitely makes more sense to pay for a Will and have your wishes followed than to pay for extra legal costs for not having a Will.