Multiple objects/islands or a single object?

I still consider myself a newbie when it comes to Blender, however I’m finding myself more comfortable modelling an object as several small objects (children) with one of them designated as a parent rather than trying to keep the entire model as one object. Is this normal and if so, what general guidelines do others typically use to determine whether a new child object (or disconnected islands of geometry) is required versus adding more geometry to an existing object?

it just depends on whether you need to have smooth transitions between parts. if you have made a model out of multiple objects, and you decide you want it to be a single manifold mesh, you can use the retopology ( mesh snapping ) tools to construct a new mesh of the exact same dimensions using the surface of your original object is a ‘mold’.

Good tip. Thank You!