There's NO such thing as saving too much! I had to learn it the hard way back in Sims3! Now, whenever my Sims get into bed - I save. Whenever I'm building and I finished building a floor (not Buy mode yet) - I save. Whenever I'm in Buy mode and complete a room - I save. I'll probably be a "save-aholic" in Sims5 as well.
Around June 10th we had a car hit a power pole, and I ended up losing all my progress for the last (maybe) 3-4 hrs. I had honestly lost track of time and paid dearly for it. Proof that anything that can go wrong, will go wrong - not just Origin.