Same same! I've legit only written stories (with 1 exception) in "past" fantasy settings like that before as well
This next story though was partially spurred on by a friend asking "hey have you ever thought about doing a modern/non-fantasy story?" and I was like "well... no but now that just gave me an idea for one!" loool Will definitely be different than what I'm used to... but also kinda exciting because of that 
I'm sure you'll nail those futuristic settings soon enough 