Copypasta is fine, I'll raise my power level.
There's no immature point to it--these are harem genres/animu/manga. They all have three main purposes: a saccharine story, lulz, and hot bitches. Ones that cook for you, clean for you, tempt you to do things either you'd never consider, or never dream of getting away with. Women who kick you in your ass to support you, who take notes in textbooks to support you, that take insane violence and GIVE insane violence to support you. Harem gives it to you from every side with and without a please, thank you, or a request for more. It's one part romance, one part chaos, one part blueballs.
And that's perfectly fine--while there's a One True Pair destined from page one, word one, word balloon one, there are also two to thirteen to sometimes twenty other girls to get your fancy from. Cry with them. Laugh with them. Laugh at them. Cheer for them. Lust for them. Be affectionate. It's all your choice. Above all, lust is emphasized--again, the point of the harem is to give you blueballs and sticky fingers like there's no tomorrow for you to nut into.