It's not that long in my game. My Sims start puking very often after using the swing set. It's one of these things that are exaggerated, like the murpy bed breaking.
I's a fundamental mistake done over and over again in TS4. In TS2, there were events that were really very rare, like toddlers crawling out of their beds on their own. In TS4, it seems like they want to immediately show off everything the game has to offer.
Murpy bed death - let it happen every 2nd time your Sims uses that bed, so that people immediately get that we have put in a new animations. Sadly they don't get anymore that it is working on and waiting for things to happen that gives more enjoyment to a lot of players. Like it is done now, it just gets on the player's nerves.
There are a few exceptions like the shark attack. I think that one is seldom enough to be enjoyable. At least, i hasn't happend to my Sims yet even though I got the pack on release day.
The problem is, some of the new packs are so shallow when it comes to new animations that EA is somewhat forced to show off the few new animations included in a pack. Like with Tiny Living, there would not have been much to discover gameplay wise if that bed didn't constantly eat our Sims.