If you give up you won't ever get anywhere. The term social skills really is what it says on the tin - it's a skill, therefore you have to practice at it to get better. If you give up with it then you're just going to miss out on a bunch of stuff which in turn could completely change your life for the better.
I had a friend similar to you, she was completely hopeless and scared of literally everything, she couldn't even get the bus without having a full on meltdown/panic attack and now she's like moved country and got herself a partner. You wouldn't even think the girl is the same person. She has tons of friends now.
All she did was stick at it, she went through a lot of traumatizing crap to get where she is now like getting the bus all on her own and having to communicate to get food all on her own but point is - it can change. She befriended other aspies and they got through it together, took on these horrible challenges until they stopped becoming challenges and just became the norm. The best advice I can offer you in this situation is just throw yourself into everything you can, find people who can understand you who can help you become better socially. The people you hang around with, their social skills can rub off on you if you be more observant and try to figure out why they would say this/that, there's always a reason for it.
A great part of my friends learning was playing mmo's and going on voice chat with people and learning from a small group of friends on there. She used to be like a robot and now you can get some pretty interesting conversation out of her.
Also, there's probably other kiwi's on this forum you could just go and meet in real life, I've met people off WP before in my home town, it's not hard and it's usually a learning experience, if not for them then you.
You could even help others to help yourself, go do some community work so you can talk to people more and get better at being social. Also - stop putting emphasis on trying to be interesting or funny, just talk about what interests you or makes you laugh and if someone finds that interesting or funny then there you go, something in common with someone.
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The term Aspergers is no longer officially used in the UK - it is now regarded as High Functioning Autism.