Tennis uses multiples of 15, but only up to 45, calls other points weird names, then closes a set, which has to be repeated at least 6 times for a separate scoring, with said scoring also needing to be repeated AT LEAST 3 more times, but can be dragged out ad infinitum.
Even table tennis has the decency of using a straight scoring system where 11 points wins a set and 2 sets wins the match.
It’s because love means nothing to a tennis player.
Sorry my coach loved that joke.