Big, wide and tall tyres look great.
They also sap horsepower, use more fuel, make braking harder and generally make more noise and in various conditions make handling worse as well as increase wear and tear. Almost all down to the added weight/rotating mass/unsprung etc....
In some off road situations they are a liability too. You can struggle in ruts made by normal width vehicles and you can get sidewall damage easier.
I still love them, but I just can't justify them for commuting 60 miles a day to and from work and the odd off road jaunt.