Well... you also don't have any Rome and Italy in US, you don't have Switzerland, Austria, Begium...
I think people in US mostly don't understand crowded, multinational Europe at all.
In Poland (more or less the same size as Utah) live 40 million people and in Utah 2,2 million so choose where would you like to live and where people feel better and more free? Of course still any word about other things cause apart from the size of the whole area ... nothing else to compare (my opinion).
What is probably specially funny to me is the fact that Winter Olympic Games took place in Utah in 2002 and in Poland in Tatra region people have been fighting and fighting for organising Winter Olympic Games FOR YEARS and probably they will never be given any chance to host them. Moreover observing whole everyday Polish reality I am sure rather Arizona, US will get that chance sooner...
All in all welcome to Romeeeeeeeeeeee! today
PS. You have these all the biggest trees in California only because ice-age didn't get them! Then climate in Europe became much colder and many trees weren't able to grow here any longer.
Besides some trees in Australia aren't less taller at all!!!
And that's all unless there aren't any nasty insects comming everywhere and buzzing awkwardly in the air irritating all true admirers of sequojas beauty...