A well thought out 3D animation of your logo will set you apart , and make your brand instantly more memorable in the first session. 3D logos are a good way of:

Providing a premium feel: if you want to position your offer as high value/quality, a 3d logo with the right materials and will help you establish that feel.

Getting users attention: If you are validating an idea or your landing page doesn't have much info yet, an interactive 3d logo can be a good way of giving your users a focus point.

Crafting marketing materials: Spline scenes allow you to export the composition in a wide range of file formats so you can reuse it to craft multiple graphics for marketing purposes.