If you limit yourself by only mixing with salafis you will miss out on some vital parts of the jigsaw puzzle called life, if you only mix with sufis you will miss out on some of the vital parts of teh puzzle, if you only mix with your tribe you will miss out, if you only mixed with muslims you will miss out out on the some important parts of islam, islam is a complete religion however some timeswe need non muslims remind us of the parts our shuyukh are ignorant of