I used to only have one system and was buying and selling and swapping gear. After a while, I had enough to make almost a second system. While my primary system has always been conventional 2- or 3- or 4-way, my second system became both a mix of high sensitivity full range speakers and electrostatics. I believe there is a way to fall in love with all three of those types of speakers for both their strengths and weaknesses. It's similar to cars - would I prefer a Porsche GT or Bentley Continental? Both incredible machines that deliver very different driving experiences.
The primary system at the time was largely a full Modwright stack hooked up to Legacy Focus SE. The second system became a low-watt experience in a 10x20 room with a PS Audio BHK Pre, alternating a Bottlehead Kaiju, Modwright Ambrose A10 (only one ever made) and Atma-Sphere S30 with Oris 200 Horns and Quad 2805 electrostats. It was very difficult to consolidate back down to a single system.