Buying a pack with planning to use the main feature

Yes. Never a waste of money if I get a fair amount of use out of the stuff I bought it for. Most of the time I do.

• My Wedding Stories- World, CAS, BB. 100%. Weddings however?! Gimme a break. Too much trouble. Like in real life, right?
• Highschool Years - Shaving. I bought it for shaving. I'm a guy. I bought it for growing beards and shaving them off again. My pixel dudes are better at beard care than myself. I've come to like the world and some other features, but the highschool business...I use it sporadically- in fact, I built an entire Creepazoid School (Hogwarts for Creeps) for my occult teenagers, but in all fairness, in its vanilla state it's just too boring for me. Shaving is what I bought it for and you know what? It's worth it. Gargantuan Razors rock. 
• Nifty Knitting- Rockin'Chair & METAL. I've learned to love almost everything about that pack though. Who knew. Perhaps one day I will knit one odd, oddly shaped sock. 
• Tiny Living- CAS, Murphy Bed & Murphy Bed Death. Murphy Bed Ghosts can possess sims and I think that's rather interesting. Never played with the Tiny house system. There's nothing fun about tiny house things in my opinion. I NEED SPACE. 
• Dream Home Decorator- Modular BB, Braided Hairstyle & Utility Kilt.  I always cheat the latter (unfortunately the kilt is not entirely Scottish) into my game since  ➡️ I Never Played as a decorator either. The thought alone exhausts me. I need adventure quests in strange lands. What's going on?