I will always wear a helmet, last June if I didn't wear my helmet, I would be dead. I fell off my 20yr old, dead quiet TB who got spooked and took off, I didn't. I went flying landed head first in the ground, broke my nose with the helmet, snapped the helmet in two and broke 2 ribs and punctured my kidney. Even worse, I pinched a nerve in the back of my neck and was paralyzed from the waist down. The docs say if it wasn't for the helmet absorbing the shock of the fall and breaking in half, I wouldve broken my neck, No IFs,ANDs, or BUTs about it. I will NEVER ride without a helmet in my life, EVER. I don't want to get hurt and it can happen to anyone young or old. I didn't even know my old TB could move faster than a trot!! Lol guess I found out the hard way.
But hey, don't wear a helmet, maybe you will never get that chance to say, Maybe I shoulda wore one because you may be just 6 feet under. Sorry to be harsh but this is something I am 100% for wearing.