For non-racing fans GT and Formula 1 probably aren't to different. Racers drive around a track at high speeds. But put these two types of vehicles side by side and you'll be astonished at how different they really are.
It's definitely fair to say Formula 1 has its faults, BUT at the end of the day it's still Formula 1. Theres nothing going faster around a track and nothing more amazing in terms of engineering.
Fun fact, a Formula 1 car creates so much downforce that it would be able to drive upside down in a tunnel at 100 mph. Wow!