I’ve recently dropped the Xbox part since my One S is a paperweight atm so at about US$4 per month is still worth it to demo games and particularly to play games that would be personally “one and done” like Outer Worlds which I enjoyed, but have no desire to replay so no need to own. Also to avoid buying MSoft titles that I assume will stay on the platform long term like State of Decay 2, Halo Wars and the AOE definitive editions, all of which I would likely buy otherwise.
Planetfall & Void Bastards make this a difficult choice. Already have Railway Empires and BSG Deadlock. Sigma Theory looks interesting too.