I much prefer ass though. Back when I was younger, I ONLY liked tits. But then I read the manga Prison school and it opened my eyes. You see, the MC gets into altercation with the male principle and the principle asks "Tits or ass?" The MC thinks for a second, then before he blurts out tits he has a golden moment as we same in the industry. He likes ass. He doesn't know why he does but he likes ass. He told the principal this revelation and the principal thought for a moment and asks "why?".
Mc thinks and says that the reason he does is because it's natural part of evolution of the male to like ass. You see, back when we were monkeys, we were more reliant on tits as it gave baby monkeys nourishment and made them live till they got older. But over time as we progressed and developed alternatives to breast milk, we as a species developed to like ass cause of its softness and the fact we could "look" at it all the time.
Ever since then, I became an ass man