Is transitioning even worth it? (MtF)

I'm only a 15 y/o boy, but most of my life I've been obsessed with crossdressing and women's clothing in general. The past couple of years I've been considering whether or not I'm trans.

I'm about 5'8 120 lbs. and unfortunately have an annoyingly masculine frame 😭 I've got super wide clavicles and naturally have that kinda lean V-shape body. I've got very little body fat and I'm mostly muscle due to genetics (I also do go to the gym occasionally). Now, I don't MIND being a guy, so this all sounds awesome on paper, but I would KILL to be a girl just so i could wear women's clothes and all that other stuff.

Basically, I'm just worried about how that would turn out if i transitioned bc I'm pretty insecure about my looks 😬