I cannot say that I actually will miss anything terribly but some of the differences now are worth noting.
I can no longer lift a great deal of weight. I am stronger than most around me but compared to what I could once do, it is nothing.
I can no longer ask any questions relating to a vehicle without having to listen to a very detailed (and sometimes incorrect) explanation of the answer. Prices for auto work used to be cheaper and I did not have to argue as much to get what had to be done, finished. No, I never knew a lot about cars but I learned what I had to so I would not be ripped off.
Washing my hair used to mean running a soapy rag through and rinsing. I could do it at the sink in 5 minutes. Now it takes me longer to work out the knots in my hair and I would never wash my hair at the sink.
Soon I hope to not miss having the ability to pee while standing up. While this is a great way to pee when out clubbing or dealing with really nasty bathrooms (the only time I do that now), it also means having that particular part there all of the time.
I am no longer intimidating. You know in the movies with the really cool action hero walks into a full bar and the whole place goes silent because he is just so golly gee swell with his presence? I actually had that happen once at a restaurant. Was branded cool by the current friends forever after that.
I used to be able to hide in a crowd. Slump the shoulders, wear something plain, and keep to myself. Being a 6' tall blonde valkyrie draws attention no matter how much you try being a part of the background.
What I have gained makes everything worth while.