I am transitioning right in the middle of my 30's, although I now accuse myself, that I didn't begin, when I was 18... but I was just too scared, because of unsupportive and aggressive father... nevermind...
I started HRT short after my 32nd birthday and now I am 33 and about to go fulltime in a month or so, I hope

Many times I also wonder why there aren't many stories about people, transitioned in their 30's... I saw a post, where marriage and kids were mentioned, but I am not sure it is the reason, because at least I am 33 and don't have a family and I know other people with the same conditions.
Nevertheless, I think there are good sides of it, because you have financial stability and are young enough at the same time. I thought, that 30's would be too late to achieve good results form HRT, but luckily I was mistaken

The only things, that I regret starting that late, are my hair problems, because of androgenic alopecia, which now prevents me from looking female enough, also the male fat pattern and shape, that I still fight with all my powers... 10 days ago I started progesterone, which I think is doing a good job about my shape and hair, so maybe the things will get fixed sooner, than expected