You can definitely feel the effect when you make something from nothing, so a smaller effect from assembling some Ikea crap makes sense.
I actually just got that yesterday. I have an area dedicated for mancave status, but the area is almost totally devoid of furniture sooo....
I went out and got me a project desk. I checked it out on the store floor, thought it was a bit flimsy, but I got it anyways because I can't stand having crap piled on the floor anymore.
After building it and filling it with manly shit, I'm not so put off by its shortcomings anymore.
But I totally feel kleinbl00, Ikea gets old once you find out that it's virtually impossible to snap that one metal hinge to that plastic thing without breaking it. The desk still works somehow though.