You are unduly modest. You might not have had the ability of your heroes but you were good enough to race some of them and your 3.35 is light years ahead of the athletic ability of most of us. What you have been able to do is certainly "exceptional" in my book.
However it sounds like you have come to accept that after the achievements of youth, which cannot be replicated, we can find other things that make life just as worthwhile - and that can include appreciating life more. I would add that as we increasingly age good health becomes much more important than physical talent.