How much longer can you tolerate Sims 4's lifespan?

I can't really vote on this because I'm not an early adopter, anyway. I stayed with Sims 3 for years before I finally bought Sims 4. I did this for several reasons: my Sims 3 game was well developed at that point and I was happy with the content I had; I wanted to let the price of 4 come down from the "buy it now, it's new!" stage; I wanted to allow the game to reach a more developed point with additional EP's and content; and I wanted to get a feel for what type of game it was before I decided to invest. As a result, I really haven't been that dissatisfied with it and have tolerated it pretty well. I'll probably follow the same pattern with Sims 5. I'll continue to build my Sims 4 game and won't jump into S5 just because it's new. I'll also try to judge it on it's own merit as a new game in an old franchise, instead of trying to shove it into the Sims 1-4 boxes.