Rbstehno, there is enormous convenience to some music servers, but it comes at a cost, as you say, in money but also in realism. I first heard a VRS server about seven years ago and it was awful, but about three years later it was very much improved and its convenience was evident.
Since then I have used my Macs with and without external dacs, typically USB connected. I have heard six different specifically music directed music servers RCA connection. Furthermore they minimize the processing within the processor. My only real complaint is that I still want to play sacds.
You paint with too broad a brush. There are music servers that are clearly better than computer based systems, but not all of them are.