I prefer mine in the house. The 1 exception is if the bike gets particularly dirty, like I keep my winter bike either in the garage or at least close to the door as to avoid tracking dirty into the house.

Also as a guy it's decorations for me. I don't buy a million pillows, or extensive art, etc. But I like having things to look at on the walls like my bikes.

I dated a girl once who came over to my apartment and my road bike was in my bedroom (against the wall). She balked at it. So I later sent her a picture of my in bed in pajamas with one arm over the bike and a tongue-sticking-out smiley face. We kept going out. I personally do not wish to invest in dating someone who's going to throw a fit over something like that because it's seemed like over time they will eventually try to drive take over everywhere in the house and you'll have nothing left. I'm fine with her leaving stuff at my house, taking over a shelf, girly scents and perfumes, etc, if she wants to do all that but then gets upset at my stuff being in my house that's going to be more and more of a problem long term. I personally could not imagine combining money with someone who took a real attitude against something fairly abritrary like bikes being in the house. I've talked to people who had their bikes stolen out of their garage, with 7 bikes they altogether might be worth more than your car.