I like novels with a harem, but I prefer that there are not too many girls. Because we do not remember who they are if they are too numerous. And you can not develop their personalities later, nor their stories.
-Against the god
-Ancient strengthening
For example I loved these two novels in the beginning and but both have continued to have more and more women. I feel like it's never going to end. If I had not read the beginning of the novels several times, I would have completely forgotten who were his first women.
Personally I like the harem, because you can see different people, differents type.
- Tsundere ( Rin from fate stay night, Makise kurisu frome steins gate, misaka mikoto frome toaru)
- Yandere (You probably don't want girl from that type)
- Yangire (Kurumi tokisaki from date a live)
- Eating girl ( Tohka frome date a live)
- kuudere (tachibana kanade, mashiro frome sakurasou no pet)
- legal loli (Mahoo hiyajo)
- Diva : (Miku frome date a live)
All these girls have a certain personnality, but in a monogamy novel, you can only one. But in a harem novel, you can have all the girls.
For each person, one of the girls will be their favorite.
That's probably why it ends in harem.
Probably the same thing for girls, different man blalalala