Spending time alone is great for recharging and for finding the space to think, and for quiet people it's essential because dealing with people all day at work and at home can be draining, time alone is the antidote to all of that. However even a good thing can go too far. If you spend too much time alone you'll eventually feel detached from other people and from life. Being alone is a frame of mind that becomes comfortable and relatively stress free so even the prospect of socializing can seem like too much effort.
