1. Ups
   1. PEOPLE
      1. rarely feel loneliness
      2. meet and befriend with different people
      3. strengthen communication skill
   2. EXPENSES
      1. cheaper rent
      2. no furniture costs
      3. split electronic/water/internet costs
   3. ENVIRONMENT
      1. wider space
      2. cheap but at a great location
   4. half the cost of living alone
2. Downs
   1. PEOPLE
      1. share spaces with too many people
      2. why if we don't get well...
      3. noise problem
      4. privacy issue
      5. can't compromise
   2. SPACES
      1. messy, too many items
      2. bathroom issues
      3. no enough of equipments