Reply to What are the advantages of a CDJ/any cd player over controllers?

I just signed up, but ive been lurking the community s for a while now.

I dont mean to start a flame war or something like that i just want a honest opinion and thought this is the right place to ask.

So las friday i went to the club and had a chat with the dj, he was using to cdj1000 and had it connected to serato scratch live and just playing remixes and switching the corssfader from one side to another which made me wonder, what are the advantages of them?
Isnt it more comfortable to use a controller? and way cheaper. And why do all the pros use CDJs instead of controllers, is it some sort of fad or is there something im failing to see?