Well, you're right, to a certain extent.
Being a Dubbie is a waste.
But I wouldn't be who I am now if it wasn't for what has happened to me, and part of what has happened to me included being a Dub, and as I like myself to regard part of the formative experience that got me to liking myself as a total waste is illogical.
If you don't like yourself, change yourself so you do.
If you do like yourself, accept that part of what got you there was being a Dub.
And remember, the best revenge is to be happy. There's a few Biblical myths I still regard as useful; Lot's wife looked back and life for her ended.
So too, we can be frozen into immobility if we look behind us.
Look forward to the freedom you can now have, look forward to the possibilities that exist. Your world is a million percent bigger than it was three years ago. There's a lot of hard changes in there, I know, but it is for the good.