Too many cloudy days. The Sims 4 worlds are gorgeous and I get my lots all beautifully landscaped only to have a large percentage of the week gray and miserable. Also, as a builder, I may need to have a Sim on a lot to test stuff and I go to build mode and it's still showing the weather. It always seems to be cloudy, and that makes building really annoying. You can't turn it all the way off.
Also the deaths. The parent of a small child was walking home from a fishing trip and got struck by lightning twice. Don't go to the gym in a blizzard because everyone is in their gym clothes. First one will freeze to death on the sidewalk, then the rest will rush out to see and they will drop like flies. My Sim was happily exercising away when there was some commotion outside. We go to see and Holy Cow it's Geoffrey Landgraab. Then J. Huntington III, Don Lothario and some random townie drop. It was carnage.
I wish a hadn't bought it but I was lured by the build items. I sold my soul for a garden sprinkler and a stone column.