I'm from the old skool when dj's could only use vinyl because thats all there was. Technology has made vinyl obsolete. It doesn't make sense to start out now as a dj that only plays vinyl. Whether you're from the old skool or not, you have to embrace the new technology like Serato etc. They take care of the whole digital vs vinyl thing as it combines the two. Bear in mind, big name record vinyl specialist shops like Phat Beats were forced to close down. Why? declining vinyl sales. Technics are no longer manufacturing the legendary SL 1200/1210 turntable. The writing is on the wall. Embrace the digital age or end up like the dodo.
RIP vinyl.
Just so that peeps don't get me wrong, I'm a big lover of vinyl myself. I've dj'd since the age of 14, i'm now 37. The majority of records I own, I have two copies of (for mixing, beat juggling etc). I'm reluctantly having to consider forking out for a Serato kit, but I know it makes sense in order to survive as a dj.
My post was not an attack on vinyl, but an observation i'm sure many agree with. I'm sure that in the same way cassette tapes are now an all but dead format, the same will be true of vinyl in the next 10 - 15 years, if not sooner.
Peace.