So what is DCC about then?
I'd suggest it is different things to different people. For some it's a way to enhance already well made and running locos, provide remote uncoupling and - mainly for diesel locos - providing sound and lighting. For others, it's perceived as a fix for their poor running locos which they don't know how to sort out. Others enjoy being on the leading edge of technology, so they can control their models (usually off the shelf RTR) with their mobile phones. That I don't understand, as I said to the young lady at the Nespresso sales stand in the local John Lewis, when she tried to extol the benefits of controlling a coffee machine with a mobile phone "app". Most of the layouts I have seen at shows with DCC seem to require a level of extra concentration from operators which doesn't help.
I don't use DCC, preferring to avoid the complications it puts in front of the operators on the exhibition layout I have. I have also found that, by careful construction, matching motors and gears, and good quality controllers, we get very good running, which would probably only be marginally improved with DCC. I should also add that when I started building my current collection (a slow process to produce a small fleet, probably considered as risible by today's 100+ loco collectors) small DCC chips to fit 4mm pre-group locos were not readily available and expensive, which was another deterrent.
If DCC works for you, then that's good. At present I don't think the benefits I would get would be worth the cost, work and inconvenience of converting. I know quite a few model builders that hold the same view
Jol