This leads her to decide to listen to the advice of her mother and Skye, and she goes travelling. She goes out to get real world experience. She understands that her self-understanding and her self worth does not come from how well she fits into a sterotypical box that society wants her too, but instead comes from within.
Mamma Mia and the Trans Agenda
In conclusion, the reason I like this movie is probably because I'm transgender. Because that's the reason for everything.
In all seriousness though, I went through a very similar situation (minus the three dads and the singing). I didn't quite understand myself or what I was feeling. I was naive and confused and I thought these feeling stemmed from the fact that I didn't fit into these boxes very well. So obviously the solution is to just try harder, to mould and force myself into these roles that were expected of me. I didn't understand my feelings of gender, so I just leaned harder into womenhood. I bought a whole bunch of dresses, I grew my hair out longer, the whole shabang.
This was kinda a big change for me, cause I had always been on the more tom-boy side. I think this change made my mom and my grandparents happier, although I don't remeber a whole lot about this time of my life. Turns out leaning into it was the worst thing I could do, I got really depressed. This point in my life was probably the worst I have ever been mentally, I was self-harming, I didn't really have any friends, I was lashing out at everyone I was close too. I was really terriblly depressed, but I didn't really know why. My mother had offered to find me help, but I didn't really know what for, this was just how it was.
Eventually, I discovered the glories of transgenderism, but by finding them, I realized the same thing as Sophie. Self understanding does not come from fitting into boxes laid out for you, it comes from critical self-reflection and thinking. No one can tell you which box if for you, or that you need a box at all. You get to make that decision. And chances are, your loved ones will support you more than you thought they would.
Other reasons I like this movie are probably ABBA, the 70s, romance, and the greek island vibe, but I think the message is what makes movies memorable.