Let me try to make it clear. If you were in reality the MC and in Belle's world (LltP) and it wasn't a fantasy, and you met and related with each of the girls, in reality, what do you think would be the normal consequences of your decisions of how you treat each girl? Now, you do get a fairy pal who will help and tease you on in spite of your choices, but the other decisions are up to you. And if you think, as in real life, you can have more than one then you are going to hurt someone.
Does that make sense? The only other possible endings besides what you'd normally expect is if you decide on only the Princess(s) (as a good guy) or you decide to be a total domineering assh*le (Bad guy) and take all the girls for a 'harem' ending. However, as others have complained, the Harem ending has no h-scenes so you won't get what harem lovers want most. (I can hear them whining way over here.) So, life is hard. Decisions have consequences.
Your best strategy is, like real life, find the one you want the most and go for it with her. If you want more than one, have lots of save games or re-starts or...wait until the plus version to see if Belle changes the way the game works now (I doubt it).
You confuse whining with constructive criticism. I provided a lot of striking arguments, why I think the endings are disappointing for many players right now (and also that a relationship building with at least one of the princesses [Lilith] is very much missing in this game so far). When I jumped into the discussion, I didn't know at all that there has been a similar discussion a while back in this thread about the same topic - I was notified by other players via pm, that it's pointless, since there has been already a discussion about it and that the dev won't listen anyway, which is the reason they stay away from this thread. But I received those pms well after my own posts. Of course in the end the dev is in charge and makes the decisions. This game is his/her baby. (Don't know if
Belle is actually female or male). But if many players complain about the very same, then it might be wise to consider some of the arguments and improve the gaming experience...Just saying, but still it's up to her/him.
Anyway you compare a fantasy adult game with real life, which isn't a valid comparison I think. Gaming in general and especially adult games very much serve a purpose, which is a little bit of escapism from real life, reducing your stress level, doing things you normally wouldn't be able to do and just having fun. For many casual gamers this is exactly what gaming is all about.
In real life I'd also never seduce my sister, that would be totally nuts. But since this is a game and Evelyn is the only blonde with a womanly body, which happens to be exactly my type of girl, of course I'll go for her. So for various reasons gaming and real life isn't a valid comparison.
Of course in real life hardly any woman would accept it, that you have something like a harem, while she and all the other girls stay loyal and faithful to you. Despite it being shown in some movies or tv series, in real life true triangle relationships are very rare, while cheating is quite common. Sure something like fuck buddys/friendship+ also exists, but it isn't that much common nor really satisfying for both in the end.
Usually a woman (I'd guess around 80 % if not more) would tell you to fuck off for good, if you desire other women next to her. Sure you can be a cheating asshole and fuck around in real life, while having a girl friend or a serious relationship, but that will have very bad consequences for you eventually most of the time. In real life I don't want to break the heart of my girlfriend and don't cheat on her, if the relationship is a good and healthy one, otherwise I'll end the relationship, before I'll go dating again. I did cheat in the past, several years ago, but I learned from my mistakes, because of the consequences and never did it again in more recent relationships. Real life is very much about mutual exclusive decisions, not only in matters of love.
But why would one want to have it in a game, which is supposed to be fun most of the time? In games you can do many things you can't do in real life, without facing bad/dire consequences. People have different expectations from this fantasy adult game, since you are allowed to seduce all of the girls until the end of the game anyway. But I provided the arguments previously, I don't want to be redundant. I just had to reply on the silly whining accusation, which isn’t about arguing any more, but only to belittle and therefore silence criticism in general.