Depends on how you want to frame it.
One of my long-time reasons to ctb is the trauma caused by my "family", along with the fact that I've lived with undiagnosed neurodivergency and mental illness for a good portion of my life (mental illness caused by said "family"). Nothing will be able to undo what they did to me, and it'd be better for everyone in my life if I just disappeared and was forgotten about. No need to burden anyone, not even as a thought.
As for an immediate reason, it's about the federal election in my country rn. Seeing what's happening to my neighbours down south scares me a lot (hello from the land of maple syrup!), and being a mix of the many things conservatives hate (non-white, openly bisexual, ADHD, lady) puts a huge target on my back.
Not gonna dive too deep into the latter, but let's just say that I have a contingency plan in place if things get really, really bad. Even if nothing drastic immediately happens, politics are a slippery slope (as demonstrated by the neighbours down south), and I'd like to go on my own terms.