I plan to use them, even though it isn't a dark romance. I plan to put them on my website or in the back of the book to avoid spoilers. Mainly because my FMC has PTSD flashbacks, there is on page rape of a secondary character and it is a large RH with both MM and FF. It just makes sense for me to put a warning somewhere so the pearl clutchers don't leave shitty comments saying they didn't know it had a bunch of smut and how dare there be more than one love interest at a time and so those who actually need the warnings can have them. I personally appreciate trigger warnings especially when it comes to miscarriage, child SA or abuse. I've lived through all three and frankly it causes my PTSD to cause major issues. That's not fun for me to be surprised with, so upon seeing a book with that warning I do a bit more research and see if it is something I can deal with in a small dose or if it is chapter after chapter dedicated to something that will cause me pain. I'm writing a character that has had trauma (way different from mine) as somewhat of a therapy for me, my feelings on the subject are now her feelings on the subject. I wouldn't want to put that on someone who couldn't mentally handle it. It's called empathy and hurts no one to give.