I used to watch games in the Metrodome in the 80s and 90s before I went there and I thought, "It can't be as bad as its described on TV. It has a kind of erector set rink-a-dink charm to it. Look a baggie for a wall in RF! It's quirky!"
Then I actually went there. Yep. It sucked massive balls. Probably the worst stadium I've ever been to a baseball game at with Riverfront its only real competition.
I'll never forget going to a mid-May game in 2003 with my brother. It was unseasonably warm and perfect baseball weather. Not a cloud in the sky, mid-70s, etc.
When we walked inside the soulless craphouse to attend the game, my brother and I looked at each other with a kind of WTF incredulity that were leaving the beautiful weather outside to watch baseball in the most sterile environment possible.
Covered, but never attended as a fan, a few Vikings games too. It was better for football, but Minnesotans have forever lost their hardiness when they pussed out and moved the Vikings inside.