I get the idea that what I wrote might be misunderstood as a adhimonem or purely personal opinion, but I have just found confirmation of the memory that caused my misgivings concerning Kasparov : my father took me to see Korchnoi, Spassky, Karpov compete in the Hastings international chess congress near to the tiny town where I was born, but I never heard of Kasparov playing in this tournament and now this confirms only Fisher also never competed :

http://www.hastingschess.com/congress-history/

my apologies if I received a very early impression from Kasparov by the fact that he most certainly made a impression on my youth but disappointed greatly by ignoring the nearest and most wonderful setting where nobody else was above competing in.