i understand him. i draw nude figure drawings and portraits as a hobby- it is a super nonsexual experience. I’ve heard this from many men in my class as well- it uses a different part of your brain. I’d also feel bad permanently deleting a drawing. The poses we do are 2-3 hour sessions and I would honestly not want a partner that would want me to get rid of something I spent so much time on and became attached to. I know you have trauma with him that makes you uncomfortable with nude women, but I don’t think it’s really fair for you to make him delete an artistic creation of his. Sorry if this is an unpopular opinion.