The point is that everyone who gets a single is super happy about it the same way that a drug addict is always happy when they get their drug of choice for free: of course it’s great. Of course it isn’t the best thing for you in the long run. I say this as someone who hated being in a double my first year and spent the next three in a single.
As far as I am concerned having apartments of 4-8 students where each has their own small room but shares a common space is ideal. But usually this is reserved for sophomore year and later.