Well, trying not to go too off topic, we live in a house that we don't like and want to get out (currently renting). Thus spending $1000.00 on a pair of subs ($1200.00 shipped) puts us that much further back to owning our own place. Additionally, when I met my wife, she was living in a basement apartment, and the people who rented the house above her were our University's track team. So we know what it can be like living below people, and out of respect for the people living in our basement, we try not to play the current set-up too loud, bass in particular since we know what it was like. These subs would not be basement people friendly.
Also, I want to have my own place and do the installation to the best of my ability for a clean and professional look, instead of doing it hodge podge where we are now only to disconnect it all and then have to buy new speaker wire for the new house installation.