Perhaps we can deepen the discussion by adding some conditions on this Utopia. If we're talking pleasure factories filled with loli harems and such, we can call that Paradise (unrealistic perfect world). And if we are talking about individual perfect scenarios, like being supreme king of everything or lvl 99 Paladin hero, we can call that Fantasy (cause not everyone can be supreme kings of everything).

Utopias would count as perfect worlds that should be somewhat real. For example, some common books that describe Utopias are 1984, Brave New World, The Giver, Plato's Republic, and Utopia by Thomas Moore.

My Paradise: World as we have it today, except all the things we need are runned by robots. Food is available for all, we somehow reached sustainability so we don't have to compete for resources, and everyone is basically spending their lives on what they like to do: socialize, watch anime, play sports, travel, cook, create art, etc.

My Fantasy: I'd either be a local shepherd in 1800s England getting involved in village politics and falling in love with some local girl,
OR
A super skilled ronin samurai swordsman with a band of guys using other weapons helping villages we pass but ultimately trying to get revenge on the guy who killed my dojo master.

My Utopia: This one's hard, but for now I'll just say America minus people with too much power, the drive for wealth and status, and every town and neighborhood's chief concern is helping out its most unfortunate members.

...Anyways...like it or leave it (or bash me), but these are just my thoughts.