Because according to 2024 pornhub statistics that's seems to be the case lesbian porn isn't even the top 5 view category for men it's only the 7th most viewed category for men https://imgur.com/a/YqKjg92

And it makes sense why most men would prefer to watch straight porn than lesbian porn. Because let's face it the only things that are really hot in lesbian porn is just seeing two hot women kissing eachother and eating eachother out. A woman fucking another woman with a strap on is cringe and seeing two women scissoring eachother is also cringe.

What's makes straight porn really hot for most men is just seeing a really hot getting fuck. But seeing a man kiss a woman or seeing him eat a woman is cringe as fuck because women are just way better at that stuff then men are in my opinion.