Why do I feel lonely even around people?

Loneliness reflects a gap between the connection you want and the connection you have, not headcount. It's driven by lack of depth, feeling unseen, or being unable to be honest. It's also a strong risk factor for depression and physical illness, so it's worth addressing actively.

Loneliness tracks the quality and honesty of connection rather than frequency of contact — which is why it persists in crowded homes and busy workplaces.

It is a measurable health risk, associated with higher rates of depression, cardiovascular disease and mortality, so it is worth treating as a health issue and not a personal failing.