@Older Ladies: Should I change my plans to move in with my bf

I'm planning to move in with my bf (of 3 years) after I graduate college. We've been planning this for months, discussed finances, have a plan to solve any personal or domestic issues (e.g. accept that it's possible down the line we'll realize we don't wanna be together anymore, discussed what we'll do if that happens), I've got a good job lined up in the area. My dad is opposed to the idea. He made some good points while he was screaming at me but he refused to accept that I might disagree w/him on some things. (e.g. I agree that young people change a lot in their 20s & men can be immature & that it'd be optimal if I were single & figuring stuff out on my own; I disagree that I'll fall into making my bf my priority above my career & I resent that my dad doesn't believe I already considered potential consequences of settling down young (I'm 23). My mother somewhat supports me (she's confident I'm making educated & cautious decisions), but my dad insisted I talk to some older women & I'm not all that close to older women in my family so I thought I'd reach out on here. Share your thoughts