At least 30-35% of the adult population is currently living the single life. In the Old Testament there was a clear stigma to being an adult single; this was to be avoided at almost any cost. The perception was that happiness and God's blessing could not be found outside of marriage and children. While marriage is still God's plan for the majority, He does call some to live a single life temporarily or permanently. It is not because God "has it out" for some believers relegating them to a second-class life of drudgery and dreaming.
The New Testament clarifies the Old Testament mindset and perhaps a traditional western cultural mindset as well. Single believers can have useful, fulfilled, and completely satisfied lives for good reasons.