I love Mac because they have the best colors for eyeshadows, lipsticks, blushes... (they are beauuuuutiful!!), the quality is great, and they innovate ALL the time, they have new products released every month, they work with the best makeup artists in the world in runways all over the globe... and they are not that expensive (there are brands that are WAY more expensive), and it's even cheaper for makeup artists.