Do we still need heroes?

Heroes exist in every society, big or small. They are the brave people, who are willing to sacrifice themselves for others. In my opinion, we still need heroes today, and very likely, in the future too. Without heroes, our society would be very timid, and no willing to try out new endeavors. However, heroes need not be brave people. They are just ordinary people, who what the courage and will to do something not tried before by others. They can be scientists, doctors, engineers or inventors. In conclusion, I believe that we still need heroes as they are the ones that allow our society to have major breakthroughs and complete great milestones.