Have I ever gotten stuck playing with my Sims?
Honestly, can't say that I have. This is because I have a very active mind which is always in either intense observation mode or 'what if 'this' happened' and 'I wonder if I could make 'this' work' modes. Plus, my Sims are always growing and advancing so, I am always learning. I've been playing since 2012 and I haven't unraveled all there is to this 'game' and how those various elements interact and react under different situation or circumstances. The odds are astronomical! And it's those 'odds' which keeps me happily on my toes!
As far as Sims goes, I have well over 800 Sims, and I truly love them all! Even the ones I cannot stand, I still love. There are some households which when I am with them, I don't want to leave then, there are others where the hours can't tick down fast enough until I switch.
I also love creating various (unofficial and un-modded) careers out of things which came naturally with the game to expand upon an already established career. An example of this would be found in the way I play the science career. My Science Center has an:
Entomologist, (collects insects)
Gemologist, (collects rocks & space rocks)
Ichthyologist, (gathers fish)
Chemist, (creates elixirs from the items the entomologist, geologist and ichthyologist collect)
Robotics, (creates items for the town and other career branches)
Agronomist (manages the town's and science center's gardens)
And of course, a Sim designated as the CEO of the Science Center.
Although each of these Sims contribute to my science center, only two of them are actually employed in the Science career. The others are self-employed as gardeners, fishermen, alchemist and inventors. They all work at my Science Center (custom built) where they have laboratories and offices. Individually as-well-as collectively they each contribute to the well-being and advancement of my towns.