I don't think it's possible not to be an Aspie any more. But it's possible to learn strategies so that you are more socially adept. I've learnt strategies over the years, so I could say I'm not as Aspie as I used to be, but it's not that I'm any different inside - I've just developed my own strategies.
I guess I'd describe it more as you're not disabled by your Aspergers any more, rather than that you don't have it. Kind of like if someone had only one leg and couldn't walk, and then was given a prosthetic leg so they could walk. It's not that they don't still only have one leg, but rather that the fact of only having one leg no longer means they can't walk.
You might find in a future new social situation you feel more Aspie again. I find I can become socially adept (albeit eccentric!) in certain groups of people after I've become familiar with them, but then if I am placed in a completely new situation, I can sometimes feel like I've 'regressed'. But it's just because of difficulty generalising what I've learnt to a situation where the dynamics are different.
As for depression, I don't think that's an inevitable part of Aspergers. I'm not depressed.
I don't see why you shouldn't be welcome here, even if you really didn't have Aspergers. My understanding is that not everyone here is on the autistic spectrum, but everyone has an interest in it, because all the topics are about the autistic spectrum.
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'If the shoe doesn't fit, must we change the foot?' Gloria Steinem