I'll expand and say screw counting carbs and fats. Just count protein and calories. It may get hard if you needed to fit in carbs/fats but if you just want to eat 3000 calories and 200g of protein then it's great to use MyFitnessPal and do that.
I will say that I don't vary my food a whole lot but then again most people won't. It's just a nice way to know I got all my protein and calories in. Plus it allows me to indulge without possibly feeling guilty (at least when cutting) or whatever.