Spliffs are absolutely HORRIBLE! Why TF would anyone smoke them?

Now me personally, I’m a huge stoner. I smoke like 10-15 blunts or Js a day. I even smoke Black & Milds here and there and cigs when I’m drunk or high on certain drugs. (I used to smoke a pack a day so I’m not a complete tobacco hater) but what I mean by spliff is when you instead of dumping all the tobacco out for a blunt, you only dump some and mix it with weed and tobacco. That shit gives me a headache and is harsh asl. Why not just get rid of that shit and roll the weed up by itself?