Your not insane....
This is normal boxer owner behaviour as far as I know!
We have two 65 Lb boxers that sleep with us all the time. They do have there own huge bed in our room that they start out on, (while they are waiting for us to get in our bed) but then it's up with us and I wouldn't have it any other way. Our two year old, Kennocha, likes to sleep on top of me. I woke up one night unable to move, took me a minute to wake up fully and realize that she was completely on top of me, not one part of her was touching the bed. "OK, NOW your getting carried away!" I told her! My husband has moments where he likes to pretend that they aren't allowed on the bed and tells them to get off now and then, so, they sleep on my side of the bed! I don't think that I know how to sleep without two boxers holding me down, snoring and scratching and farting through the night. Hey, maybe I'm insane too.....
NAH!
I always say, "There are dogs, and then there are boxers!"
And only another boxer owner gets that.