The NX-01 being decommissioned after ten years was unusual anyway, given modern day space shuttles have a longer life expectancy. I suspect it was a by-product of the fact that TATV was originally written at the end of Enterprise's third season, to be used as a series finale in case the show were cancelled. There the should would be decommissioned as a result of the extensive damage it took during the Xindi mission.
I assume that the NX-01 was decommissioned because of the extreme historical significance of the ship. It was basically the catalyst for the eventual formation of the Federation.
Yeah, in the original cut opening scene it's clear he's retired. However, the movie muddles it by having Kirk still appear in uniform in the opening.
I don't think that muddies anything. Real-life retired military personnel sometimes wear their uniforms at ceremonial events.
The crew was indeed old. The ship, however, was only 7 years old at that point, if one is to believe that the ship was built during the Whale Probe incident.
It makes no sense that Starfleet would be building a new
Constitution-class starship at the same time the
Excelsior was being launched and the
Enterprise being decommissioned during TSFS. Far more probable that it was an existing ship (traditionally identified in fanon as the USS
Yorktown) given a new name and registry in honor of Kirk's crew and the original 1701. So more than likely, as others have said, the
Enteprise-A was comparable in age to the 1701. In fact, if she was launched the same year as the 1701, then she would have been 48 years old during TUC.
And I'm still waiting for someone to give me a satisfactory answer as to why the Miranda class (a contemporary to the Constitution class) was still in service during DS9 when the Constitution class wasn't?
Was the
Miranda class a contemporary to the
Constitution class? I know that's a common assumption, but what if it wasn't? What if the
Miranda class was first launched in the 2270s or 2280s -- perhaps even designed around unused
Constitution hulls? If the
Miranda class was launched in the 2270s or 2280s, that would make the class about 90-100 during the Dominion War rather than 130-ish like the
Constitution class.
I would also just generally assume that there were more
Mirandas in service during the Dominion War just because there were more
Mirandas in existence before the war. For all we know, maybe the Klingon War of 2256-2257 drastically reduced the number of
Constitution-class ships in service, and that's why there were only a handful of them around during TOS.