... and guide you to Charlie Jane Anders' (author of All The Birds in the Sky) #5 of her "10 Writing "Rules" We Wish More Science Fiction and Fantasy Authors Would Break"...
5) No portal fantasy
(I kept Charlie Jane Anders' link for reference)
I totally support breaking this "rule". Please open new doors, portals or whatever else you can open to help me enter new worlds! I want them ALL. I'm actually convinced that's where I went as a child when I got totally unresponsive as has been documented by a score of caretakers and family members. Isn't this what books are about? Escaping into worlds of magic that remove us from daily live, responsibility and ... news? I go from one room to another through a door (usually), why not let me continue entering another world through a portal of whatever kind? The only "portal fantasy" I find somewhat annoying if the only thing the protagonist does is try to get back. Like, really? You enter a new world (probably because he was depressed, lonely, or got something wrong) and all he wants is to go back? But if we get to explore and make the most out of it:
GET ME THERE!