Yes and no....

in the past 3 months I purchased 2 new bikes. In January i purchased a Trek Emonda SLR and went with direct mount rim brakes. True that bike isn't offered with disc but I could of purchased a number of other high end bikes if disc were what I wanted. Last month I purchased a Trek 8.5 DS with disc brakes.

Now on a road bike brakes are just "slowers" and not "stoppers". And having full carbon wheels vs alloy also decrease braking. But with the terrain on Long Island I don't need to stop on a dime.

Now the DS is a different story since I do intend to ride it in the wet on some single track, gravel and dirt roads. There are hills and some technical descents so having excellent brakes is a top priority.

Will disc brakes be on road bike in the pro peloton soon... sure. Rides ride what their sponsors want to sell. But I best teams will have bikes with traditional rim brakes for flat and fast stages.

Now for the OP, he's going to be on pavement on flat terrain and not planing on riding in the rain unless expectantly caught, so given carbon fork with rim brakes vs steel fork with disc... i vote for the carbon fork.