Personally, I agree that never being left alone feels worse, but from an objective perspective, it depends on who the person is. I very much prefer isolation, if not am drawn to it, especially considering the fact that I've never liked attention of any kind even if it was a small praise on a test score. Honestly, not liking is an understatement. It makes me uncomfortable, it's overwhelming, and it's like being trapped in a small box at a zoo. It's unusual, makes me feel cornered, and warps my perspective of myself when I think about how I have no idea what the person is thinking vs what they're saying. Then I'm left with conflicting thoughts about my own existence.

And suppose there's someone who is isolated from the world and can't escape because they're not attractive enough, aren't financially similar, or suffer from a specific mental illness. This loneliness and social rejection ultimately leads them to suicide or an attempt, or outright vile display or behavior. The position I was in as a child once. But I don't know what it's like to be an adult dealing with social rejection, but I imagine that most've learned to cope since they're more mature and equipped with experience. I don't know.

I think it all comes down to how a person copes with their lifestyle.