Is being lonely really that bad? I like being lonely, not that it makes me happy, as a matter of fact it may be opposite but I really didn't like when I was not lonely (or) say when I had to socialise, indulge in the small-talk just for the sake of it; I felt like having to constantly fake emotions and have insincere conversations. I've almost completely cut off any realtime communication and my current lifestyle see…
Lonely, is defined as "sad because one has no friends or company". Which I would say is unfortunately common in the modern world, where we believe the internet to connect people, but in reality it socially isolates.
Alone, simply meaning "having no one else present", is not that bad, no, until you start to feel lonely. I enjoy alone time for the same reasons you describe. However, too much of it leads to feelings of loneliness.
An ironic aside. I think many people, deep down, would rather feel slightly annoyed by turning down or avoiding social situations with friends, than to not have those situations available to them in the first place.