What makes a woman choose such a life?

Cover title.
I can tell you all about Catholic nuns -- Our common purpose-to strive for holiness -- But why do they wear such funny clothes? -- Come, see what life is like in a convent! -- If thou wilt be perfect...come follow me -- I have never regretted becoming a nun -- All right-what goes on behind convent walls? -- Show me a happier family-if you can -- And this is our reward.