So I didn't discover baseball until the Diamondbacks. Growing up I had the Santa Barbara Dodgers and their dilapidated stands and watching the MLB on TV was like watching grass grow.
Over the last several years I have attended several games and have enjoyed every one. Well maybe not so much the ones we have lost :-) I have taken several people new to the park and/or baseball and made the walk around the concourse. It is always a fun upbeat place to go. I bring my own water but most often buy a beer and a Diamondbacks dog to get me through the first innings. A couple of times I have gotten to enjoy the fireworks launched from the parking garage across the street which are very intense for their duration.
I have never been to another MLB park and I am sure some others have more history but to me this is a first class venue to watch Major League Baseball and I look forward to many more visits. Every interaction I have had with the staff has been first rate.