Yes - I agree completely, I have memories of other things I have done that I feel the same way about for sure.
I have definitely found something I enjoy very much here, I am no stranger to mountains, but the races are something new entirely and qualitatively different to every other competitive sport I can think of (none of which I do exactly because I am just not competitive like that). I fully appreciate the sentiment about like minded people; I will never forget the welcome I received at my first fell race - without wanting to sound weird, I felt something like the proverbial 'prodigal son'!
It is definitely along the lines of how I think life should be
Congratulations on a life well lived!