Wim Wenders: "Sometimes I feel that only people who're able to be alone are also able to be with other people. And people who're not able to be alone are a burden in any relationship because they eat the other person up - because they need somebody, and that need can be a terrible thing."*
Which makes perfect sense.
If you're truly able to be alone, and if you didn't need someone, then why would you want to be with someone?** Inertia is the second law of motion, and you've hit the perfect stride. You shall remain immovably alone, and you wouldn't have it any other way. It's elementary, my dear reader.
Which leads us to,
The people who do get into relationships are the ones who've never really learnt to be alone.
Beneath the facade of every happy relationship, there are two cannibals eating each other up. And if they do learn to be alone, that's when they split up. Logically.
Now, if only I could be so collected and clinical when next my grandmother pesters me on the subject.