I'm 43 and while I would probably never build something that big I do like a good sounding loud system with some Lows.
I'm a musician so I love music.
I have a system that is clear as a bell and I can distinguish every little part.
That would be what I'd be after. I absolutely love a premium system that reproduces sound (highs, mids, lows) perfectly. One that is so natural that you just close your eyes and bath in it. If the bass is overwhelming, it just destroys the beauty of the music. But if the OP is after MONSTER bass, he certainly has it with that setup.