The issues mostly come down to one of enforcement. When we had sodomy laws that did make it the governments business what would happen in the bedroom. I don't think it's really effective for anyone's rights to prosecute that.

Imagine you are just a straight person living with your same sex roommate. No sex. But someone starts a rumor. Should the government be able to investigate that? I think not. Same if you check into a hotel with your friend. Your relationship really isn't anyone's business. I wanna share a room with my mates sometimes when traveling. I don't feel like I should have to prove to anyone that we aren't gay.

The issues with it mostly come down to the NAMBlA side of things. Yes if a 40 year old man is checking into a room with a 12 year old boy and they aren't related, I think you have a good argument for that being viewed with great scrutiny.