Of course it is. Reasons to go to the theater:
-The screen is big.
-You get to see the film a few months earlier.
Reasons to watch at home:
-The incremental cost of "admission" is small.
-Food comes at grocery store prices, in limitless variety.
-You can have a drink.
-You can toke up.
-The chair is comfortable.
-If there are any loudmouths present, you can tell them to STFU.
-Your feet don't stick to the floor.
-You have a pause button.
-If your companion likes the movie and you don't, you don't hurt their enjoyment by turning around and playing with the computer.
Did I mention the theater has a big screen?