I can't believe I got through this whole entire thread. Took me days. But then again, I usually only read this site on my phone during my breaks at work and while my husband is playing his games.
I have to say half of the stuff in this thread I haven't quite experienced yet, however, the main things that annoy me are including but not limited to:
Sprinklers. "Play With Watertoys." I watch that like a hawk, and only let my sim autonomously play when someone she's interested in plays, just to build the relationship.
...When I get an idea, get all hyped up about it (my latest one being wiping a complete world to the ground with nothing but foliage and roads, and starting from the ground up), then I read this site, and want to try something else. I'm way too scatterbrained.
...That my Voodoo priestess/magician lady can only do so much with the magic items from the store. The Cauldron, so far, is my favorite because I get some pretty neat stuff out of there (most of it special, rare or high quality), but so far, each "Conjure" action depletes her energy by one fifth (she's passed out tons of times - so have her visitors). But the Voodoo doll is kinda pointless, the Book o' Spells is a little less than the doll, and the scrying glass, I just can't find. Hopefully, the Hypnotizer will help with her magic shows.
...Because my Voodoo Lady is halfway into her career as a magician, she's now a 4 star celebrity with a TON of friends...and I totally blew 20,000 lifetime reward points on the Long Distance Friend for nothing: she completed the charisma challenge where her friendships never decay. Well, I guess a double whammy in the friend department doesn't hurt.
So far, that's all I can think of.