A strong preference for being with anyone inoffensive instead of being alone is generally the result of being alone for a long time. It doesn't survive a long period of being with someone. Once you've been with someone for awhile, the possibility of being alone becomes a siren song that haunts you whenever your partner irritates you in the smallest way. What makes a long-term relationship worthwhile despite the stress of living with another ego and bundle of needs is the unique support and understanding you can get from someone who has known you for years.
