When it's genuinely fine to let randomness choose
Not every decision deserves a pros-and-cons list. Where to eat, which movie to watch, who takes out the trash this week, which task to start first — these are 'any reasonable option is fine' decisions, and the actual cost of deciding is usually higher than the cost of picking wrong. A decision wheel short-circuits the debate by making the choice for you, fairly.
Because Spinzelvo weighs every entry equally (unless you deliberately duplicate one), it's a genuinely neutral way to settle low-stakes disagreements between two or more people, without either side feeling like they picked the outcome themselves.