Yes, calibrating my screen was a good move and brought my screen much closer to the output of my printer. I recommend it to anyone who is even casually concerned with how their screen looks.
I went through a brief period of riding the saturation slider pretty hard in my earliest days. There's something about images dripping with color that I find attractive. And corals can be so colorful.
These days I don't deliberately change colors very much other than setting the white balance / color temp when I open a RAW image. I am still learning though and currently am playing more with exposure and brightness than color.
I notice two different drives in me while post processing. One is to make an accurate digital representation of the subject and the other is to create an interesting / beautiful image based on the subject. I currently find it more challenging to be accurate than abstract.
On this site I think accurate images are generally more appropriate as the husbandry of the subjects, their health and thus their appearance is the core of why most of us are here. I also think we need a thread for images where the goal is not duplication of subject but visual interest.