Like the title states: 'How/why did you start playing Protectorate?'
After I played a demo game of WarMachine on a holiday I was hooked to the sweet system and awesome looking models, so when I got home I took a look at the system and settled on Khador.
A few days later I went to my local store and started looking at the battleboxed. Even though I thought Khador was it for me I also really liked the Cryx battlebox. After about 30 minutes of pondering a store employee came up to me and started telling me about all Cryx and Khador.
When he finished his story he also picked up the Menoth battlebox and started telling me about warcaster reviving infantry and wracks.. And his detailed story about not dying infantry and man who scream so hard they generate focus is what got me hooked. Such a shame I never used the reclaimer after I read what he could do rule wise...