Why did Matisse use fauvism?

Answer 1

Matisse and some of his colleagues exhibited together at the Autumn Salon in Paris 1905. One critic felt their art made him feel surrounded by wild beasts, which is the meaning of the French word.

Answer 2

Les Fauves was a group of artists, Matisse the most important of them. You cannot invent a group of artists, so he did not. Matisse and his fellow painters painted in an expressionist style, called Fauvism.

Matisse may have been the originator, but they all worked together.

Answer 3

There is usually one and the same answer to those questions 'Why did XXX become an artist?' Because they felt they had the talent and the urge. It is as simple as that!