Why is pickleball popular?
Pickleball has become popular because the equipment (paddles and balls) is cheap and existing tennis courts are easily converted.  Pickleball is easily learned without lessons.  There are social benefits to pickleball due to small courts that tend to promote conversation.
Instruction: Why is pickleball popular?
Context: 
Response: Pickleball has become popular because the equipment (paddles and balls) is cheap and existing tennis courts are easily converted.  Pickleball is easily learned without lessons.  There are social benefits to pickleball due to small courts that tend to promote conversation.