let me tell you a story.
there once was a little derp. his name was nixter. he realy loved minecraft. and when he discovered mods, he burst with happyness! and after that decscovery, he found out about modpacks...

welcome! no rules, no factions, no lag, all up to you!
removing factions adds that multiplayer spice to the game, and gives you a better chance of getting a good raid

have fun!