This is true. I've been grieving the loss of Isekai Demon Waifu, which shut down only a few days ago on the 19th of this month. I had been playing it over 3 years, and had unlocked most of the girls, become the #1 on my server, and had grown attached to seeing my harem girls every night when I play the game before bed. I missed the server shutdown notification and I was messed up the next day. It hit me hard.
I hope there is another harem game with succubi and monster girls. IDW had a lot of charm. The music, art style, aesthetic. Amazing monster girls. I'm going to miss seeing Ephinas, Fiadum, Hastia, Scardia, Palotti, Ymir, and all the others.
It doesn't seem fair that we can spend years of our life, hundreds or even thousands of dollars, make a game experience part of our lives, and then one day it just goes poof and it's all gone. Part of you vanishes in that moment. It's like a bandaid being ripped off a wound, or a light in your life going out. Because someone else decided it cost too much to keep a server running?
They should be required to transition the game into an offline mode!