I don't want to live with my boyfriend 🤷🏽‍♀️

My bf & I have been together for 3yrs and while it would make sense for us to live together, I don't want to live with him. He's been hinting at it but it's just not something I want right now. I love having my own space, & he has a key and is more than welcome to come and go as he pleases but I don't think we need to "cohabitate" right now. Has anyone else ever felt like this or is this a sign that our relationship is doomed?