Do you hate playing against players who are booked up on opening theory? Would you like to play different positions which don't normally occur with regular chess? Then Chess960 could be the better choice for you.
I think it’s been calculated that there are 121000 different musketeer chess starting positions with just the 10 new pieces. And Zied is still making new ideas. Compared with one starting position in standard and 960 in FischerRandom.