sin⋅gle [sing-guhl] adjective, verb, noun
–adjective
1. only one in number; one only; unique; sole: a single example.
2. of, pertaining to, or suitable for one person only: a single room.
3. solitary or sole; lone: He was the single survivor.
4. unmarried: a single man.
5. pertaining to the unmarried state: the single life.
6. consisting of only one part, element, or member: a single lens.
7. sincere and undivided: single devotion.
8. separate, particular, or distinct; individual: Every single one of you must do your best. It's the single most important thing.
9. (of the eye) seeing rightly.

–verb (used with object)
10. to pick or choose (one) from others (usually fol. by out): to single out a fact for special mention.

–noun
11. one person or thing; a single one.
12. an accommodation suitable for one person only, as a hotel room or a table at a restaurant: to reserve a single.
13. an unmarried person, esp. one who is relatively young.

Synonyms: distinct, particular, unwed, select, individual.

source: dictionary.com

No where in that definition does it mention: sad, depressed, lonely, unwanted, unloved, grumpy, boring, ugly as synonyms or definitions of being single. So... my decision is, its ok to be single... for now. :)