I feel for you older guys, I really do
I'm 24 and I'm told this is still "young". In a few years, when Tsuji's treatment is out - I'll be in my late 20s or possibly early 30s. "Youth" is over at that point. Honestly, if you've lost cosmetically significant amounts of hair in your mid 20s, you can find solace in knowing that it likely won't be a lifelong thing for us. However, your youth, the best years of most people's lives, will have more or less passed by the time you get your hair back. You'll have your confidence back when it comes to social interactions and dating, but it will not be the same. Unless you can score younger women, most women at this point will be carrying baggage and their biological clock is ticking. Lots of them will be single moms, divorced maybe, well into careers and other responsibilities.
The carefree, galavanting around, party hard lifestyle where you can easily spend time with lots of different, attractive young women to find out what kind of woman you really want to spend forever with and/or intentionally impregnate are days long gone by at this point.
I'm fortunate enough to have found meaning in life as a professional composer. Hairloss damaged my confidence there as in my line of work, I attend a lot of different events to meet new clients and first impressions are everything - it's hard to be my normal, charismatic self when I hate looking in the mirror. So, at least I'll be able to gain that confidence back with hair and it will always mean something beyond body image for dating purposes.
With women, though? I've accepted that I prioritized my music a little too much. I spent all of my teenage years and early adulthood practicing, studying etc. and by the time I started seizing opportunities with women (most of whom actually were older than me), it wouldn't be long before hairloss hit swiftly and I went from being able to get with 7s and 8s to probably being able to get with a 5...6 on a real good day and I just can't bring myself to date women I'm repulsed by. So getting back to my old self, image wise, in my late 20s or early 30s is fantastic...but it's a consolation prize, because what should've been my "prime" years are now behind me and they are never coming back.
Nobody gets everything in life. Not everything.