In terms of time and convenience: Hell yeah it is, it blows an oven out of the water easily.

I will say: On average, oven-prepared food does taste better, but not to the point where it's worth the extra time and effort most of the time imo.

The microwave is a godsend for the tired worker who just wants to sit down and eat when they get home, and not have to potentially undergo an entire project first.