It makes total sense to me - you have a story you want to play, but not the tools to play it yet. That was werewolves for me. I hit a point in my story where I needed more tension between occults, and werewolves seemed like the solution. Too bad it was another 8 months before they released. Right now I'm in a lull because I played out a story a certain way and want to go back with pose player and "fill in" all the missing moments that I had to imagine, so there's a huge part of me that isn't ready to advance their lives forward until I shoot the in between scenes.
If you're content playing the game like this, then I'd just keep on as is until they hopefully finally release fairies. If you want more in the mean time, you could fill out the save with the perfect community lots and NPCs to surround your main characters so they have to perfect world to be dropped into. Another potential option is playing out the early lives of Mystelle, Louvenia, and Cassandria up to the point where you make the household as you want it. Bonus of that is they have the time to accumulate skills and bonus traits so they're not just blank sims when you're ready for the family.
