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Not really. Humans aren't designed to live alone, we're social creatures, isolation is not good for our brain, our sleep cycles change, depression hits hard, and if the isolation is bad enough then it can even cause hallucinations. This goes for introverts as well as extroverts, everyone needs social activity. Being an introvert just means that you find spending time with other people to be physically/emotionally draining (so maybe you go out to parties but after an hour or two you feel tired and leave), where as extroverts feel like energized from social activities.
While i've also heard what devilman said before, I see it slightly differently due to my situation. I have quite extreme social anxiety, so the times i'm most relaxed is when i'm entirely cut off and socialising stresses me out, even the idea of doing it causes me anxiety. I won't say I like being alone but I could certainly cope, whether it's mentally good for me? I mean probably not but I kind of live my life restricted as it is. The mental side of it isn't deeply wounding me.
But what if you want to be in a relationship but you are stuck in circumstances where your best option is to remain single. It's quite confusing as well as frustrating
In a relationship