It took me a few episodes to like Enterprise and now I really enjoy the series. I really wish it when t a couple of more seasons.
The theme song was off putting to me at first. Once I bonded with the cast and characters it somehow became better and now I let it play for most episodes and even sing along.
I think the reason people don't really like the theme song very much is because it isn't the classic instrumental. All of the other Star Treks have been very obviously Star Trek from the opening few tones. Enterprise isn't like that.
Strange New Worlds got this, even though it was a brand new piece of music just the first few notes, you can tell it's Star Trek without even looking at the screen.
Back when Enterprise was airing some fan took the opening footage and added instrumental music to it instead and it was soooooo much better. Worked wonderfully. Really wish I'd saved a copy of it, because I can't find it anymore.
I think it matches with the prequel aspect before Starfleet was really a thing, and it matches up beautifully with the montage of Big E’s evolution. DS9 has the best instrumental but ENT’s intro is great.