The reason of inner personality is never considered by someone who is hurt with an introvert's behavior. Introverts are looked down upon for lack of good 'communication skills'. Right from an early age, introverts have to compete very hard with peers, who seem to have no problem in public or interpersonal speaking.

Is there any problem being an introvert?

Being an introvert is often considered weak. They aren't quite as good as the extroverts, who just seem to breeze through life. But that's not true, there is nothing wrong with being an introvert. The main problem is with society, which doesn't see it in the same way.

Why is it hard for introverts to socialize?

People who are natural introverts often feel pressure to change. They worry that they are not outgoing enough, and so sometimes they push themselves to socialize in ways that cause them more stress than enjoyment.