It's not like I don't give people a chance, but I'm pretty quick in identifying and cutting off people who are draining my energy, even if they are otherwise quite nice and enjoyable company for others.
There's probably something to be said about this world being largely built for extroverts and needing to be able to be at least somewhat like that to succeed. Sometimes good opportunities are just a matter of showing up and being sociable, and being good at it.
If you're gonna have to do it, might as well get better at it and get at least somewhat used/desensitized to it. A part of it is also about picking up on social cues, making others comfortable around you and establishing relationships - like those anecdotes about someone who has a really good CV not being able to compete to someone who knows someone at the company, but obviously not just in the professional world.
I don't necessarily like that it's the way it is and have missed out on A LOT of opportunities due to being quite introverted but oh well.
Even if talking to people is beneficial (I can accept that), you're also shaming people for being introverts. Nobody should be faulted for enjoying me-time. It isn't even harmful. No, it's not like eating too many sweets.
I know I can eventually beat it, and I'm so happy for you and everyone who beats social anxiety. You are my idols!
That said, I don't like it when someone says "yeah just do it, it's possible". It's not possible to just do it. Yeah only doing the thing is doing the thing and preparing to do it is not doing the thing, I get it. On the other hand, you can also jump off a cliff without checking your parachute, just saying.