Well, its funny. My webcomic is a BL for various reasons. 1- I have read a lot of beautiful webcomics and I thought that as a first work it would be a good theme to tackle. Romance is hard to make, but I find harder to draw action, so I went with slice of life/bl to get a hang of drawing daily, making script, learning all I can until I can do other things.
2- I feel closer to that, because gay xd (or demisexual, I think really).
3- I found easier to draw male than females
4- Yes, also because people search for it, so it would be easier to find subscriber for a first work, and later that public can jump to new projects,
...but I am all about inclusivity, so I forced myself to do some GL couples on my comic. In fact, the first kiss won't be who everyone will be expecting, and I used that opportunity to practice drawing some kisses. Its awkard as hell I don't know why, I gonna die trying to do the MC!
So, that's my answer. I can do both, but its easier (for now at least) to do BL.