When your SO doesn't want to do AR?

I have no idea where to start :/

I joined this group before we spoke about it. My Fiancé and i have been TTC for almost 2.5years, i have PCOS so it's obviously a bit difficult. Anyhow i was considering starting IUI if we aren't pregnant by Christmas, i figured that's the ideal plan because he get's 4weeks off at christmas cause workplace shuts, so he can put in at least a few sperm deposits throughout this time for freezing so i can do an IUI every month until i get pregnant, because where you've gotta go to store samples is a few hours travel away and only open Monday-Friday till 5:30pm when Fiancé works Monday-Friday til 4pm :/ so yeah went to discuss this with him and he said no, he says he doesn't want to do assisted with like medications and IVF anf such (despite PCOS i have been ovulating fairly regularly just not conceiving and occasionally having throw offs like this cycle ovulated 2 days later then usual at CD21, and sometimes i ovulate a couple days earlier), he said he's happy to keep trying as long as i need, but maybe we should start looking into adoption sometime soon.....i don't even know how to feel about this? I totally get his reasoning, he says "why try that hard when it would seem it wasn't meant to be,when there are children out there who need a loving home and family?" But i personally feel like i don't want to give up until i have exhausted all options. Anyone else had their SO have a similar stance? Did they change their mind? What changed it?