AITA for not wearing my $15k birthday present?

I enjoy collecting and wearing watches, and recently, for my birthday, my girlfriend gifted me a grey market Rolex Submariner. This was a surprise she didn't consult me on, and I was grateful for the gesture, but for a couple reasons, it wasn't my style at all: 1) I mostly wear gold or gold toned watches because they match my skin tone a lot better than steel watches do, and the watch she gifted me was stainless steel 2) I've mentioned multiple times that I really dislike Rolexes, especially their cyclops (the part of the watch indicating the date), and find them ugly.

Because I was grateful for the gesture, I wore it a few times and then went back to wearing my normal rotation. My girlfriend insisted I wear the watch she got me, and when I said no, she got angry and said it's not fair she spent almost 15k for a watch I didn't even like.

I know a watch may not seem like a big deal, but to put it into perspective, imagine somebody gave you a present relating to a hobby you really enjoy, but something completely opposite to your preferences and tastes within they hobby, and insisted you use it daily.