Pooping is interesting. Having a toddler reminded me how pooping is this uniquely vulnerable, sensitive time for humans. I think a lot of us use books/phones/etc to distract ourselves from a sensorily intense activity. I'm not saying that's a good or bad thing, just noting it.
I will say that playing my Nintendo DS on the toilet many years ago gave me hemorrhoids that still persist decades later. Don't camp on the toilet.
You are not alone! Starting with Freud and the anal stage, many psychologists have concerned themselves and linking this not with sexual but with mortal aspect of the human condition
And yet the toilet is one of the most connected places in the house. I love this BBC "Thinking Allowed" podcast episode on toilets that makes the point powerfully:
I will say that playing my Nintendo DS on the toilet many years ago gave me hemorrhoids that still persist decades later. Don't camp on the toilet.