Spruce - How to make a home look more expensive [a reaction]

A reaction to this post.

I was just going through my e-mails and I am subscribed to "Spruce makes" and related stuff. And one of the posts I got in the mail was about making a home look more expensive. Can't say that I would do any of the things described. They said to display antiques and my reaction was: "Ugly". I am not a fan of the look of antique furniture. I prefer IKEA-style pieces. Almost all the furniture in our home is from IKEA. And we're very happy with it. Like, there might be some smaller things I might wanna change but in general, I love IKEA furniture. 

One of the other tips was about including furniture with curves. Again, not something I would enjoy. Also, all the stuff they were showing for these tips was on the brown-ish and warm-toned side. Honestly, I think cool tones make a room feel bigger and in general, I hate warm tones. Especially brown and warm gray. I would never use those in my home. I prefer cool gray, white and blue. With the occasional pop of other colors, if they are on the cool spectrum. We used to have a living room themed in brown colors some decade or so ago. And I'm extremely happy it no longer exists. I would never go back to that color scheme. Even if I do see it on the internet all the time. What is it with people liking the warm and brown tones in their homes? It just feels dim and dark (or dull). And not bright enough. We have even done away with yellow lighting. We have LED ceiling lights that are white - like daylight. Again, I wouldn't go back to what we had before. Ever.