When you are alone and have no one to talk to, you are litereally forced to turn inside and explore your inner self. Have a little shit chat with you can be so benificial. You will explore your hidden feelings, unsolved problems and secret desires. In conclusion you will bring out your real you a bit more. By spending time with yourself and gain a better understanding of who you are what you desire, you are more likely to make better choices.
When you are always part of a group, you are not just do or think what you want, you will more likely start to adapt to the group, which is not always what you want for yourself.
Constantly being „on“ doesn’t allow your brain to rest and replenish itself. Being all by yourself with no distractions gives your the opportunitiy to clear your mind, focus and think more clearly. It’s kinda like a little retreat for your body and mind. Also if you feel more introverted like I do, being around people all the time gets exhausting and you need to charge up your batteries by being by yourself,
It sounds kinda cheesy, but you will start to love and appreciate yourself more.