Why do you like the Steven Colbert show so much?
Sometimes I'd rather not watch the news, yet with Stephen Colbert every night, he informs with his comedy, in a way, I can take in. A great task to be sure. 
I hear that Steven Colbert's net worth is six million a year.  That is crazy.
In that particular industry, at the level of viewership and sponsorships that talent brings in, he's being paid competitively, comparatively. He's been working since The Daily Show. 
So he is basically a comedian talk show host that talks about american politics and culture.
I think the word "basically" may not perhaps capture, the talent he has. Structurally yes, that is his work. Although he has a heart, and it shows in his work. He includes his family too, and they bring a lot to the show. 
I am not a fan of Colbert.  What do you think of Conan O'brien?
Conan is a Harvard educated comedian, with just as long a work history as Colbert. Conan started as a writer, on Saturday Night Live, and The Simpsons. Both, very talented comedians. 
What about Jon Stewart?
Stewart is a friend to both Colbert and O'Brien, and they've all done skits together, back when they worked in the same building, many years ago.  Trevor Noah is another talent, Samantha Bee too, it's good to have an even representation.