Не было у бабы хлопот, купила баба порося

People, of their own accord, assume responsibilities which give them concern or trouble later. See Охота пуще неволи (O), Человек сам себе враг (4)

Var.: Не знала баба горя (хлопот), так купила баба порося

Cf: Не who has no worries makes himself some (Br.). People create their own problems (Am.). Will is the cause of woe (Br.)