This installation of arch is 2 years old at this point and there's nothing wrong with it and I want to do a clean reinstall to feel more fresh. But I've been constantly delaying it for a long time because I'm scared breaking something and also not having my laptop fully functional for even a day isn't a pleasant thought.
The benefits I think is being able to handpick which files I want to keep and which packages I would reinstall since the thought of how many files and packages are left over from when I momentarily needed them is really unpleasent. But this habit of reinstalling the OS as a cleanup method might be a bad one I've brought myself from the time I used windows which was justified back then but it may no longer be here since I can achieve what I want with a much more simple and less risky method
So am I being an idiot here? Or should I go for it?
Edit: I do have bleachbit but the benefit of a reinstall is that only system files, essential packages and my personal files are kept (actually copied out, formatted and copied back in for my files). These two aren't the same
Edit 2: Thank you everyone for their answers, it's clear that I don't have that much reason to wipe my system at the moment. It might be a better learning experience to look for orphan files and packages
Having a single file config simplifies backups and that's tempting but I don't want to lose the arch wiki (I know some info is general to Linux but some isn't), AUR and other stuff that I miss once I lose it to an even more niche OS. I can try it on a virtual machine at some point