I used to play a bunch of joseimuke and otome gacha when I was a teen (and had more free time to grind lol), but nowadays, I really don't have the patience!
I've played the Cybird games, ToT, Love x Producer and Love and Deepspace, and although some players enjoy the constant influx of new content, it's really not for me. I feel like always adding new stuff can lead to OOC down the line, as well as a disconnect from the romantic moments, since they're more or less fanservice (since you're not guaranteed to get the card, they're not always canonical). Getting a late-game romantic moment between the characters, when you're still at the beginning of the game, just doesn't have the same impact as seeing the relationship develop in a complete game...
There's also the risk of EOL... you never know when a game will be deemed not lucrative enough, and you lose all your hard work (and money!) And don't even get me started on bad odds, always pulling characters you don't even care about in banners and stuff, when your resources are so limited ;b