I was speaking with a 54 year old ex-biker the other day.
The reason he is an ex-biker is that when he was 34 he had a serious argument with a tree at about 60mph.
He said that he was lucky to still be alive.
The accident was completely his fault with nobody else involved (apart from the tree)
He was in a coma for 10 months and lost his right forearm in the crash.
He said that the accident happened as he got distracted for only a second.
I have always ridden with complete concentration on the road - I won't change that and the higher the speed that I travel at, the more I concentrate my full attention on the road ahead - planning, escape routes and what ifs e.t.c.