Both Microsoft and Sony obviously didnt think it was a fad for both of them to introduce their own motion devices. Plus Just dance,Zumba and skylanders have sold better on Wii than the HD twins, all of which are games released during the Wiis so called decline. Like people have said before me Nintendo are just following the 5 year console cycle they always do, i mean if they still wanted to support the Wii we would have seen sequels to games like NSMB etc which no doubt would have kept up interest in the Wii. Like everything all good things come to an end eventually.