Oi..things hare are starting to get a bit "my way is the right way".
Listen, wanting to assimilate is by no means the only goal you should reach for. Certainly, passibility does have many benefits, but I've personally concluded that I'm a lot happier if I am just honest with the people I trust wrt who I am. I mean, yeah, being perceived as cis will help you a lot professionally, out in a harsh world. But passing without question at all times can't be the only acceptable outcome...I'm betting some of the deepest stealt girls here still get clocked every once in a while, even if it's just in passing with a stranger who knows what to look for. My point is that if assimilating is your highest goal here, then you need to reconsider what it is that you want. A lot of people here have managed that; meanwhile, I've embraced being a part of the counterculture.
And wanting to be attractive...come on, who doesn't want to be attractive? Perhaps it does fade, but it's possibly to be older and still look good. I think beauty is something we all strive for as trans women (trans men too, in some cases) because we spend so much time obsessing over our bodies that we become fixated on the concept of beauty-for the same reason we tend to be a lot more feminine than cis women, at least starting out in many people I've met before.
A final thought, all of the "perfect" trans girls you see on websites, and in youtube videos: Would you publish an unflattering photo of yourself online? Of course not! The people on talk shows, on youtube videos, on websites-they're wearing makeup, having the camera at flattering angles, in good lighting...all of these different factors matter a lot when we're evaluating how well someone passes. If you see a photo of Laverne Cox without makeup, or a head-to-toe pic of Janet Mock wearing something not so flattering in the shoulder region-you'll get what I'm saying. This is why comparing yourself to others can be so dangerous. Not because that comparison is a bad thing; it's just that people tend to play up their best selves!