Painting disrupts life – furniture moves, things get covered, and there’s a smell while paint dries. If you pick rooms randomly, you can end up with chaos in every corner of the home at once.
Planning the order – for example, starting with lesser-used rooms, then bedrooms, then living areas, or grouping rooms on the same side of the house – helps you manage sleeping spaces, storage and daily routines. You can move items from one finished room to another in some kind of system instead of shuffling everything without a plan.
It also keeps momentum going. You can see progress clearly and avoid half-finished rooms scattered everywhere.
A bit of sequencing thought before opening the first can of paint saves a lot of stress mid-way.