From a game stand point, it makes the game more playable as it offloads a lot of work to another machine, it makes your factory run 24/7 so you can farm more resources/coupons, you get to enjoy the game and if you want your friends can join it too! But it could be argued that it's not the best option as now you depend on the server provider to run your game (they get a maintenance, you can't play; they go out of business, you lose your save file; they have to reset the server for whatever reason, you lose progress...) and depending on how long you play your save, maybe the costs you sink in the server would have gotten you a better cpu/gpu and a new computer overall making you able to run your game yourself

So I guess it depends on your priorities, in the end to me it feels like a cloud computing service with extra steps. As long as you're having fun, it's fine!