Why did you choose the components and speakers that are in your system?

In my current system, the TT was the inspiration for upgrading the whole thing. After looking for many years for a cherry rebuilt Garrard 301, I found a beautiful one built by Woodsong Audio. Being of very high quality, I upped my entire system to match.
That was a unique case. Mostly, speakers are the best component in which to base a system. Match a proper amp, preamp (or integrated), cables, power, vibration control and source.