IMHO, you aren’t antisocial but introverted. Antisocial behavior is something quite off-putting, such as doing things with little to no regard for other people’s safety. Extraverts can be antisocial as well. Shocking, I know.
People label introverts as “antisocial”, “shy”, “quiet”, but that’s because they don’t really understand introversion. Introverts aren’t necessarily shy or quiet, they just draw their energy from within. Most introverts feel drained from being around large groups of people for too long, or in social events or functions. They feel the need to detach and do solitary activities to “recharge”. They prefer forming deep, lasting relationships and being with small groups or one to one.
The Church embraces both introverts and extraverts, because we are all members of the Body of Christ. If you don’t like to mingle around or socialize, your strength may lie elsewhere, such as in contemplation, prayer, writing and reflection. You aren’t in any way displaying unhealthy behavior, just because you prefer solitude over company.