Your genre usually lives in the overlap between what you love to read, what kinds of problems fascinate you, and the emotional experience you want to give readers. A quiz like this one helps surface those instincts by asking about your tendencies as a storyteller rather than your surface-level preferences. The genre you should write is the one where your natural strengths become superpowers.
Absolutely. Many successful authors work across genres, and most good books blend elements from several. If your quiz result surprises you, that's worth paying attention to. Your primary genre is a starting point, not a cage. Once you understand the conventions of one genre deeply, crossing into others becomes much easier.
That tension is worth exploring. Sometimes it means your current project would benefit from borrowing techniques from your "natural" genre. A literary fiction writer with thriller instincts might discover their novel needs more structural suspense. A romance writer with horror leanings might find their strength in emotional dread. The mismatch often points to an untapped advantage.
There's no objectively best genre, but there are better fits for individual writers. The best genre for you is the one where the work feels like play more often than punishment. Romance and thriller tend to have the largest commercial readerships. Literary fiction wins the most prestige. Fantasy and sci-fi attract the most devoted fans. But none of that matters if the genre doesn't match how your brain naturally builds stories.