it may not the best romantic series, bc so many misunderstandings between leads, but it's really good that they back together in their crucial moments, especially when the ML lost all of his family except lil sis and his wife.
It's more realistic bc although ML is possessive to FL, he managed to be a great commander for his soldiers. The friendship between ML and his friends was so great as well, they support each other till the end. the ML sacrificed everything for his homeland even thought he must be separated from his beloved ones and his beloved one stay strong and faithfully waiting for him
What was the point of her going back in time if things are going to unfold the same way anyway?
i think, first, she doesnt want end up getting married with the same guy, which was she regretted the most. She also found out that her and SM have similar regrets (wasting their life for useless things in their previous life). That's why she wanna do something that can prevent him end up like his previous life
Bc they postponed ep 5?Not completely stop, but some ppl will lose their interests, for example me
Well i dont watch other dramas. I watch something that worth my time. I dont want to be crazy bc i have to wait 2 weeks, moreover after they released a preview, it's exhausting
K-Drama 
It's more realistic bc although ML is possessive to FL, he managed to be a great commander for his soldiers. The friendship between ML and his friends was so great as well, they support each other till the end. the ML sacrificed everything for his homeland even thought he must be separated from his beloved ones and his beloved one stay strong and faithfully waiting for him