I am seldom a fan of new construction. I would never live in a newly-built home and prefer something pre-1950 as a home, but every now and again, something new, modern, and, dare I say, avant-garde, catches my eye.
I.M. Pei's pyramid at the Louvre is a classic example. It just works.
I have to admit that I like the new deYoung... The old building was once great, but there were so many band-aids on it that it totally detracted from the art. It needed to be replaced - it couldn't be repaired and still maintain the look and feel of what once made it great.
I loved the old Steinhart Aquarium, as well. My ex-sister-in-law's father was chief engineer and I spent many hours behind the scenes. I saw the rotting pipes and deplorable conditions that were shielded from the public view. It needed to be replaced, as well - even with the nostalgic love I had for the place.
Sometimes we just need to embrace change...