"I'm not a Formula1 driver, I don't need a tacky racing chair. I promise to get a proper office chair with lumbar support and adjustable head & arm rests. I will save some money and will also look less ridiculous in front of my PC."
I don't even question them being comfortable. But if it's the most comfortable chair you've ever seen, it's probably just a sign that you've been accustomed to dirt-cheap, shitty office chairs. Which is no wonder, really.