Today is...Satisfied Staying Single Day

Today is Satisfied Staying Single Day. What are the perks of the single life?

On the shelf: from 1800s, of women, without prospects of marrying

Bachelor: an unmarried man of marriageable age

Bachelor woman: also bachelor-girl or bachelor-lady, an unmarried woman who has her own income and lives independently.

Spinster: originally to denote the occupation of one who spins yard, became the proper legal designation of one still unmarried; a woman still unmarried, especially if beyond the usual age for marriage.

Single: unmarried, celibate, bachelor, spinster, in some cases prostitute; used to denote unwedded persons in 1303.