Do I have the right?

My older brother was 4 when he passed away of a tragic accident at my grandparents house. I was born about 3 years later. I am now 23 and he would have been 30 this year.

I never met him, but I think of him often. I think about who he would have been and wonder if we would have been close. I have 4 other older siblings, and 3 of them knew him. I just wonder if I have the right to miss him or talk about him when I never got to meet him.