Trump is bombastic, egotistical, self-promoting and without any fear (he has everything to gain and nothing to lose). He isn’t afraid to say un-PC things and call a rose a rose.
He may not make sense as a candidate, but really, what’s not to like?
Regardless of whether or not Trump is doing this largely out of self-promotion (I am almost certain of that), I am also nearly certain he’ll ask far better questions, and, treat the candidates more fairly than the MSM stooges have in the past.