I'll keep this pretty straightforward
  1. Do I like painting or is this an excuse to drink wine at a bar on a Tuesday?
  2. Do I need an excuse to drink wine on a Tuesday?
  3. Do I want to paint the exact same picture as seven of my "friends"?
  4. Do slightly different colors count as creativity?
  5. Do friends let friends participate in unoriginal activities?
  6. Am I ever going to display said painting?
  7. Is my master-piece-of-crap likely to end up on the cold, dirty shelves of the nearest goodwill?