Answer:
Personal opinion:
1) The illustrations and animations are simplified, cutified, or exaggerated in a way, making them interesting to various viewers.
2) The story plot of anime varies widely, from romcom to robots, from comedy to horror. Anime can have the most unusual, bizarre, sometimes traumatic storylines that you wouldn't find in a normal television show. It's also good to point out that many of the storylines are not even cliché.
3) It can cater audiences of all ages and sexuality, from kids to adults, from straight to LGBT.
4) It can give you a break from political and religious discussions in story plots.
5) It gives you a glimpse of japanese culture and traditions
6) Amazing music compositions (which can also be bizarre) that moves people.
7) Talented voice actresses that immerses you to the 2D world
There are many, I hope this helps. Cheers!
